[c-nsp] cisco-nsp Digest, Vol 54, Issue 66
Salerni, Steve
steve.salerni at twcable.com
Tue May 22 15:54:34 EDT 2007
Rich,
I need the metro access image on these. Thanks.
Thanks,
Steve Salerni
Senior Network Engineer
Time Warner Cable - Albany Division
Desk: (518)242-8880
Cell: (518)470-3612
-----Original Message-----
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Today's Topics:
1. NM-2CE1B pinout (Vincent De Keyzer)
2. Re: NM-2CE1B pinout (Simon Lockhart)
3. Cisco Security Advisory: Vulnerability In Crypto Library
(Cisco Systems Product Security Incident Response Team)
----------------------------------------------------------------------
Message: 1
Date: Tue, 22 May 2007 16:15:00 +0200
From: "Vincent De Keyzer" <vincent at autempspourmoi.be>
Subject: [c-nsp] NM-2CE1B pinout
To: <cisco-nsp at puck.nether.net>
Message-ID: <004f01c79c7b$95662bc0$9b8115ac at osiris.grp>
Content-Type: text/plain; charset="us-ascii"
Hello list,
I can't find the pinout of the DB-15 connector on the NM-2CE1B.
Can somebody help?
Vincent
------------------------------
Message: 2
Date: Tue, 22 May 2007 15:22:46 +0100
From: Simon Lockhart <simon at slimey.org>
Subject: Re: [c-nsp] NM-2CE1B pinout
To: Vincent De Keyzer <vincent at autempspourmoi.be>
Cc: cisco-nsp at puck.nether.net
Message-ID: <20070522142246.GJ866 at virtual.bogons.net>
Content-Type: text/plain; charset=us-ascii
On Tue May 22, 2007 at 04:15:00PM +0200, Vincent De Keyzer wrote:
> I can't find the pinout of the DB-15 connector on the NM-2CE1B.
I'm fairly certain it's this one...
http://www.cisco.com/univercd/cc/td/doc/product/access/acs_serv/as5400/h
w_inst/mig/54crdcbl.pdf
Simon
--
Simon Lockhart | * Sun Server Colocation * ADSL * Domain Registration *
Director | * Domain & Web Hosting * Internet Consultancy *
Bogons Ltd | * http://www.bogons.net/ * Email: info at bogons.net *
------------------------------
Message: 3
Date: Tue, 22 May 2007 10:57:53 -0400
From: Cisco Systems Product Security Incident Response Team
<psirt at cisco.com>
Subject: [c-nsp] Cisco Security Advisory: Vulnerability In Crypto
Library
To: cisco-nsp at puck.nether.net
Cc: psirt at cisco.com
Message-ID: <200705221057.crypto at psirt.cisco.com>
Content-Type: Text/Plain; charset="us-ascii"
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
Cisco Security Advisory: Vulnerability In Crypto Library
Advisory ID: cisco-sa-20070522-crypto.shtml
http://www.cisco.com/warp/public/707/cisco-sa-20070522-crypto.shtml
Revision 1.0
For Public Release 2007 May 22 1300 UTC (GMT)
-
------------------------------------------------------------------------
------
Summary
=======
A vulnerability has been discovered in a third party cryptographic
library
which is used by a number of Cisco products. This vulnerability may be
triggered when a malformed Abstract Syntax Notation One (ASN.1) object
is
parsed. Due to the nature of the vulnerability it may be possible, in
some
cases, to trigger this vulnerability without a valid certificate or
valid
application-layer credentials (such as a valid username or password).
Successful repeated exploitation of any of these vulnerabilities may
lead to a
sustained Denial-of-Service (DoS); however, vulnerabilities are not
known to
compromise either the confidentiality or integrity of the data or the
device.
These vulnerabilities are not believed to allow an attacker will not be
able to
decrypt any previusly encrypted information.
The vulnerable cryptographic library is used in the following Cisco
products:
* Cisco IOS
* Cisco IOS XR
* Cisco PIX and ASA Security Appliances
* Cisco Firewall Service Module (FWSM)
* Cisco Unified CallManager
This vulnerability is assigned CVE ID CVE-2006-3894. It is externally
coordinated and is tracked by the following external coordinators:
* JPCERT/CC - tracked as JVNVU#754281
* CPNI - tracked as NISCC-362917
* CERT/CC - tracked as VU#754281
Cisco has made free software available to address this vulnerability for
affected customers. There are no workarounds available to mitigate the
effects
of the vulnerability.
This advisory is posted at
http://www.cisco.com/warp/public/707/cisco-sa-20070522-crypto.shtml.
Note: Another related advisory is posted together with this Advisory.
It also describes vulnerabilities related to cryptography that affect
Cisco IOS. A combined software table for Cisco IOS only is available at
http://www.cisco.com /warp/public/707/cisco-sa-20070522-cry-bundle.shtml
and can be used to choose a software release which fixes all
security vulnerabilities published as of May 22, 2007. The related
advisory is published at
http://www.cisco.com/warp/public/707/cisco-sa-20070522-SSL.shtml
Affected Products
=================
Vulnerable Products
+------------------
This vulnerability affects all products that use affected versions of
third
party cryptographic libraries and enabled applications that are using
crypto-related function. The following Cisco products are identified to
be
vulnerable:
* Cisco IOS
* Cisco IOS XR
* Cisco PIX and ASA Security Appliances (only 7.x releases are
affected)
* Cisco Firewall Service Module (FWSM), all releases prior 2.3(5) and
3.1(6)
are affected
* Cisco Unified CallManager
The following text lists application layer protocols or features that
must be
enabled in order for a device to be vulnerable. It is sufficient that
only one
protocol or feature is enabled in order for a devices to be vulnerable.
In
order to be not vulnerable, all of the listed application protocols or
features
must be disabled.
Affected protocols in Cisco IOS
+------------------------------
To determine the software running on a Cisco IOS product, log in to the
device
and issue the "show version" command to display the system banner. Cisco
IOS
software will identify itself as "Internetwork Operating System
Software" or
simply "IOS." On the next line of output, the image name will be
displayed
between parentheses, followed by "Version" and the Cisco IOS release
name.
Other Cisco devices will not have the "show version" command, or will
give
different output.
Only Cisco IOS images that contain the Crypto Feature Set are
vulnerable.
Customers who are not running an IOS image with crypto support are not
exposed
to this vulnerability.
Cisco IOS feature set naming indicates that IOS images with crypto
support have
'K8' or 'K9' in the feature designator field.
The following example shows output from a device running an IOS image
with
crypto support:
Router>show version
Cisco IOS Software, 7200 Software (C7200-IK9S-M), Version
12.3(14)T1, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2005 by Cisco Systems, Inc.
Compiled Thu 31-Mar-05 08:04 by yiyan
Since the feature set designator (IK9S) contains 'K9', it can be
determine that
this feature set contains crypto support.
Additional information about Cisco IOS release naming is available at
the
following link:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_pa
per09186a008018305e.shtml.
You are affected by this vulnerability if you are running one of the
vulnerable
IOS software releases and have, at least one, of the following protocols
or
features enabled:
* Internet Security Association and Key Management Protocol (ISAKMP)
* In some IOS releases the Secure Socket Layer (SSL) may also be
affected
* Threat Information Distribution Protocol (TIDP)
* Cisco IOS SIP Gateway Signaling Support Over TLS (SIP-TLS)
* Extensible Authentication Protocol-Transport Layer Security
(EAP-TLS)
As some other protocols may use affected crypto library the most
accurate way
to determine if your IOS release is vulnerable is to consult fixed IOS
releases
table.
Internet Security Association and Key Management Protocol (ISAKMP)
+-----------------------------------------------------------------
To determine if your device has ISAKMP enabled, enter the command
"show crypto isakmp policy". Below is an example of a device that has
ISAKMP enabled.
Router#show crypto isakmp policy
Global IKE policy
Protection suite of priority 1
<more output>
If your output is like in the following example then you do not have IKE
enabled on your device.
Router#show crypto isakmp policy
ISAKMP is turned off
In Cisco IOS two features rely on ISAKMP - IPSec and Group Domain of
Interpretation (GDOI). Presence of either of these features is detected
by the
previous example.
Prior to IOS version 12.3(8)T, IKE was enabled by default, with no
crypto
configuration needed for the IOS device to process IKE messages.
12.2SXD versions of Cisco IOS have IKE enabled by default. To ensure
that IKE
processing is disabled, enter the global configuration command
"no crypto isakmp enable".
As of IOS version 12.3(2)T (which includes all 12.4-based versions),
crypto
configuration is required to enable IKE message processing.
In order for an IOS device to be vulnerable crypto map must be
explicilty
configured and applied to an interface.
Secure Socket Layer (SSL)
+------------------------
In some Cisco IOS software releases the vulnerable library is used to
process
elements of SSL functionalities. SSL is used to protect several
application
layer protocols like Hyper Text Transfer Protocol over SSL (HTTPS).
HTTPS is not the only protocol that may use SSL but it is the most
commonly
known. In order to determine if your device has HTTPS configured enter
the
command "show running | include secure". Below is an example of a device
that has HTTPS enabled.
router#show running | include secure-server
ip http secure-server
Threat Information Distribution Protocol (TIDP)
+----------------------------------------------
To determine if your device has TDIP enabled, enter the command
"show running-config | include parameter-map". Below is an example of a
device that has TDIP enabled.
router#show running | include parameter-map
parameter-map type tms TMS_PAR
Cisco IOS SIP Gateway Signaling Support Over TLS (SIP-TLS)
+---------------------------------------------------------
To determine if your device has SIP-TLS enabled, enter the command
"show running-config | include crypto signaling". Below is an example of
a device that has SIP-TLS enabled.
router#show running | include crypto signaling
crypto signaling default trustpoint user1
Extensible Authentication Protocol-Transport Layer Security (EAP-TLS)
+--------------------------------------------------------------------
To determine if your device has EAP-TLS enabled, enter the command
"show running-config | include method". Below is an example of a device
that has EAP-TLS enabled.
Router#show running | include method
method tls
Affected protocols in Cisco IOS XR
+---------------------------------
You are affected by this vulnerability if you are running one of the
vulnerable
Cisco IOS XR software releases and have, at least one, of the following
protocols or features enabled:
* Internet Security Association and Key Management Protocol (ISAKMP)
* In some IOS XR releases the Secure Socket Layer (SSL) may also be
affected
* Secure Shell (SSH)
Internet Security Association and Key Management Protocol (ISAKMP)
+-----------------------------------------------------------------
To determine if your device has ISAKMP enabled, enter the command
"show running-config | include isakmp". Below is an example of a device
that has IKE enabled.
Router#show running-config | include isakmp
crypto isakmp
crypto isakmp policy 1
crypto isakmp profile profile-a
Secure Socket Layer (SSL)
+------------------------
SSL is used to provide secure communications to the application layer
protocols like Hyper Text Transfer Protocol over SSL (HTTPS) and Object
Request Brokers (ORB). To determine if your device has any service
enabled that uses SSL, enter one of the following commands
"show running-config | include http server ssl" or
"show running-config | include xml agent corba ssl". Below is an example
of a device that has both of the services enabled.
Router#show running-config | include http server ssl
http server ssl
Router#show running-config | include xml agent corba ssl
xml agent corba ssl
Secure Shell (SSH)
+-----------------
SSH is an application and a protocol that provides secure replacement
for the
suite of Berkeley r-tools such as rsh, rlogin and rcp. It is highly
prefered
over Telnet for interactive sessions. To determine if your device has
SSH
enabled enter the command "show running-config | include ssh server".
Below
is an example of a device that has SSH enabled.
Router#show running-config | include ssh server
ssh server
ssh server rate-limit 100
Affected protocols in Cisco PIX and ASA Security Appliances
+----------------------------------------------------------
You are affected by this vulnerability if you are running one of the
vulnerable
Cisco PIX and ASA software releases and have, at least one, of the
following
protocols or features enabled:
* Secure Shell (SSH)
* Internet Security Association and Key Management Protocol (ISAKMP)
* Secure Socket Layer (SSL)
Secure Shell (SSH)
+-----------------
To determine if a device has SSH enabled, enter the command "show
running"
and observe the output. If it contains the line as in the following
example
then SSH is enabled.
PIX#show running
....
ssh <host_IP_address> <host_netmask> <interface>
....
Internet Security Association and Key Management Protocol (ISAKMP)
+-----------------------------------------------------------------
To determine if a device has ISAKMP enabled, enter the command "show
running"
and observe the output. If it contains the lines as in the following
example then ISAKMP is enabled.
PIX#show running
....
crypto isakmp policy 2
authentication rsa-sig
....
Secure Socket Layer (SSL)
+------------------------
SSL is used to protect several application layer protocols like Hyper
Text
Transfer Protocol over SSL (HTTPS) and Cisco Adaptive Security Device
Manager
(ASDM) session.
To determine if a device has SSL enabled, enter the command "show
running"
and observe the output. If it contains the line as in the following
example then SSL is enabled.
PIX#show running
....
http server enable
....
Affected protocols in Cisco Unified CallManager
+----------------------------------------------
You are affected by this vulnerability if you are running one of the
vulnerable
Cisco Unified CallManager software releases and have, at least one, of
the
following protocols or features enabled:
* Certificate Authority Proxy Function (CAPF)
* Cisco TAPI Service Provider (Cisco Unified CallManager TSP)
Certificate Authority Proxy Function (CAPF)
+------------------------------------------
CAPF is automatically installed with Cisco CallManager but is disabled
by
default. In order to verify if CAPF is enabled on your Unified
CallManager do
the following steps.
* Step 1 - In Cisco CallManager Administration, choose Service >
Service
Parameter.
* Step 2 - If you are running 4.x software then do the following: from
the
Server drop-down list box, choose the publisher database server. If
you are
running 5.x software then do the following: From the Server
drop-down list
box, choose the first node.
* Step 3 - From the Service drop-down list box, choose the Cisco
Certificate
Authority Proxy Function service.
If you are given CAPF parameters then CAPF is running on your system.
Cisco TAPI Service Provider (Cisco Unified CallManager TSP)
+----------------------------------------------------------
In order to determine if Cisco Unified CallManager TSP is installed open
Windows Control Panel (Start > Control Panel) and click on Add/Remove
Programs.
If 'Cisco Unity-CM TSP' is listed then you have it installed on your
system.
Products Confirmed Not Vulnerable
+--------------------------------
No other Cisco products are currently known to be affected by this
vulnerability. Specifically, the following product's features or
products are
known not to be affected:
* Cisco IOS
+ Secure Shell (SSH)
+ Secure Copy (SCP)
* Cisco Unified Call Manager
+ Hyper Text Transfer Protocol over SSL (HTTPS)
+ Cisco Unified CallManager is configured for Secure Survivable
Remote
Site Telephony (SRST)
* MeetingPlace Express and MeetingPlace for Telepresence
* Cisco IP Communicator
* All Cisco Unified IP Phones 7900 Series
* CIP TN3270 Server
* Cisco GSS 4400 Series Global Site Selector Appliances
* Cisco CatOS
The list is not exhaustive.
Details
=======
ASN.1 is defined by ITU-T (International Telecommunication Union -
Telecommunication Standardization Sector) standards and it describes,
among
other things, data structures for encoding values. The vulnerability
addressed
by this advisory is related to the implementation of parsing certain
data
structures and is not a vulnerability in the standard itself.
Protocols that use ASN.1 (e.g., voice over IP, Simple Network Management
Protocol and others), but do not rely on the vulnerable crypto library,
are not
affected. This advisory only addresses an implementation issue in a
particular
crypto library from a single vendor.
This vulnerability is present in the following Cisco products:
* Cisco IOS, documented as Cisco bug ID CSCsd85587
* Cisco IOS XR, documented as Cisco bug ID CSCsg41084
* Cisco PIX and ASA Security Appliances, documented as Cisco bug ID
CSCse91999
* Cisco Firewall Services Module (FWSM), documented as Cisco bug ID
CSCsi97695
* Cisco Unified CallManager, documented as Cisco bug ID CSCsg44348
Vulnerability Scoring Details
+----------------------------
Cisco is providing scores for the vulnerabilities in this advisory based
on the
Common Vulnerability Scoring System (CVSS).
Cisco will provide a base and temporal score. Customers can then compute
environmental scores to assist in determining the impact of the
vulnerability
in individual networks.
Cisco PSIRT will set the bias in all cases to normal. Customers are
encouraged
to apply the bias parameter when determining the environmental impact of
a
particular vulnerability.
CVSS is a standards based scoring method that conveys vulnerability
severity
and helps determine urgency and priority of response.
Cisco has provided an FAQ to answer additional questions regarding CVSS
at
http://www.cisco.com/web/about/security/intelligence/cvss-qandas.html.
Cisco has also provided a CVSS calculator to help compute
the environmental impact for individual networks at
http://intellishield.cisco.com/security/alertmanager/cvss.
Cisco Bug IDs:
CSCsd85587 - Router crashes when processing ISAKMP message
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg41084 - IOS XR crashes when processing ISAKMP message
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCse91999 - PIX/ASA crashes when processing ISAKMP message
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
CSCsg44348 - Unified CallManager crashes when processing crypto message
CVSS Base Score: 3.3
Access Vector: Remote
Access Complexity: Low
Authentication: Not Required
Confidentiality Impact: None
Integrity Impact: None
Availability Impact: Complete
Impact Bias: Normal
CVSS Temporal Score: 2.7
Exploitability: Functional
Remediation Level: Official Fix
Report Confidence: Confirmed
Impact
======
Successful exploitation of the vulnerability listed in this advisory may
result
in the crash of a vulnerable device. Repeated exploitation can result in
a
sustained DoS attack.
Software Versions and Fixes
===========================
When considering software upgrades, also consult
http://www.cisco.com/go/psirt and any subsequent advisories to determine
exposure and a complete upgrade solution.
In all cases, customers should exercise caution to be certain the
devices to be upgraded contain sufficient memory and that current
hardware and software configurations will continue to be supported
properly by the new release. If the information is not clear, contact
the Cisco Technical Assistance Center ("TAC") or your contracted
maintenance provider for assistance.
Each row of the Cisco IOS software table (below) describes a release
train. If a given release train is vulnerable, then the earliest
possible releases that contain the fix (the "First Fixed Release")
and the anticipated date of availability for each are listed in the
"Rebuild" and "Maintenance" columns. A device running a release in the
given train that is earlier than the release in a specific column (less
than the First Fixed Release) is known to be vulnerable. The release
should be upgraded at least to the indicated release or a later version
(greater than or equal to the First Fixed Release label).
For more information on the terms "Rebuild" and "Maintenance," consult
the
following URL:
http://www.cisco.com/en/US/products/sw/iosswrel/ps1828/products_white_pa
per09186a008018305e.shtml
Cisco IOS
+--------
Fixed Cisco IOS software releases are listed in the table below.
+-----------------------------------------------------------------------
------+
| Major Release | Availability of Repaired Releases
|
|------------------------------+----------------------------------------
------|
| Affected 12.2-Based Release | Rebuild | Maintenance
|
|------------------------------+----------------------------------------
------|
| 12.2B | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.2BC | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2BZ | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2CX | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2CZ | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2EW | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2EWA | 12.2(25)EWA9 |
|
|------------------------------+----------------------------------------
------|
| 12.2EX | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2EY | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2EZ | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2FX | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2FY | Vulnerable; migrate to 12.2(35)SE2 or
later |
|------------------------------+----------------------------------------
------|
| 12.2FZ | Vulnerable; migrate to 12.2(35)SE2 or
later |
|------------------------------+----------------------------------------
------|
| 12.2IXA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2IXB | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2IXC | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2JA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2JK | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SB | 12.2(31)SB3 |
|
|------------------------------+---------------------+------------------
------|
| 12.2SE | 12.2(35)SE2 |
|
|------------------------------+----------------------------------------
------|
| 12.2SEA | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SEB | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SEC | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SED | Vulnerable; migrate to 12.2(25)SEE3 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SEE | 12.2(25)SEE3 |
|
|------------------------------+----------------------------------------
------|
| 12.2SEF | Vulnerable; migrate to 12.2(35)SE2 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SEG | Vulnerable; migrate to 12.2(35)SE2 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SG | | 12.2(37)SG
|
|------------------------------+---------------------+------------------
------|
| 12.2SGA | 12.2(31)SGA1 |
|
|------------------------------+---------------------+------------------
------|
| 12.2SRA | 12.2(33)SRA3 |
|
|------------------------------+---------------------+------------------
------|
| 12.2SRB | | 12.2(33)SRB
|
|------------------------------+----------------------------------------
------|
| 12.2SXD | Vulnerable; migrate to 12.2(18)SXF8 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SXE | Vulnerable; migrate to 12.2(18)SXF8 or
later |
|------------------------------+----------------------------------------
------|
| 12.2SXF | 12.2(18)SXF8 |
|
|------------------------------+----------------------------------------
------|
| 12.2T | Vulnerable; migrate to 12.3(22) or
later |
|------------------------------+----------------------------------------
------|
| 12.2XR | Vulnerable; migrate to 12.3(22) or
later |
|------------------------------+----------------------------------------
------|
| 12.2YU | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.2YV | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.2ZD | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2ZE | Vulnerable; migrate to 12.3(22) or
later |
|------------------------------+----------------------------------------
------|
| 12.2ZF | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.2ZG | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2ZH | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2ZJ | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.2ZL | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2ZU | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.2ZW | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| Affected 12.3-Based Release | Rebuild | Maintenance
|
|------------------------------+---------------------+------------------
------|
| 12.3 | | 12.3(22)
|
|------------------------------+----------------------------------------
------|
| 12.3B | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3BC | 12.3(17b)BC6 |
|
|------------------------------+----------------------------------------
------|
| 12.3JA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3JEA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3JK | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3JL | 12.3(2)JL1 |
|
|------------------------------+----------------------------------------
------|
| 12.3JX | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3T | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3TPC | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XB | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XC | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XD | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XE | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XF | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XG | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XH | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XI | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XJ | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XK | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XQ | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XR | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XS | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3XU | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3XW | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3XX | Vulnerable; migrate to 12.4(10) or
later |
|------------------------------+----------------------------------------
------|
| 12.3YA | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3YD | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YF | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3YG | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YH | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YI | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YK | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YQ | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YS | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YT | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.3YU | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.3YX | 12.3(14)YX7 |
|
|------------------------------+----------------------------------------
------|
| 12.3YZ | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| Affected 12.4-Based Release | Rebuild | Maintenance
|
|------------------------------+---------------------+------------------
------|
| 12.4 | 12.4(7d) | 12.4(10)
|
|------------------------------+---------------------+------------------
------|
| 12.4SW | 12.4(11)SW1 |
|
|------------------------------+---------------------+------------------
------|
| | 12.4(6)T7 |
|
|
|---------------------+------------------------|
| 12.4T | 12.4(9)T3 |
|
|
|---------------------+------------------------|
| | 12.4(11)T1 |
|
|------------------------------+----------------------------------------
------|
| 12.4XA | Vulnerable; migrate to 12.4(6)T7 or
later |
|------------------------------+----------------------------------------
------|
| 12.4XB | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.4XC | 12.4(4)XC6 |
|
|------------------------------+---------------------+------------------
------|
| 12.4XD | 12.4(4)XD6 |
|
|------------------------------+----------------------------------------
------|
| 12.4XE | Vulnerable; contact TAC
|
|------------------------------+----------------------------------------
------|
| 12.4XJ | 12.4(11)XJ2 |
|
|------------------------------+----------------------------------------
------|
| 12.4XP | Vulnerable; contact TAC
|
+-----------------------------------------------------------------------
------+
Cisco IOS XR
+-----------
The following table lists fixed Cisco IOS XR software.
+---------------------------------------------------------------------+
| Cisco IOS XR | SMU ID | SMU Name |
| Version | | |
|---------------------+-----------------+-----------------------------|
| 3.2.3 | AA01802 | hfr-k9sec-3.2.3.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.2.4 | AA01801 | hfr-k9sec-3.2.4.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.2.6 | AA01800 | hfr-k9sec-3.2.6.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.0 | AA01799, | hfr-k9sec-3.3.0.CSCsg41084 |
| | AA01780 | |
|---------------------+-----------------+-----------------------------|
| 3.3.0 | AA01780 | c12k-k9sec-3.3.0.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.1 | AA01781 | c12k-k9sec-3.3.1.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.1 | AA01798 | hfr-k9sec-3.3.1.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.2 | AA01797 | hfr-k9sec-3.3.2.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.3 | AA01796 | hfr-k9sec-3.3.3.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.3.3 | AA01785 | c12k-k9sec-3.3.3.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.4.0 | AA01782 | c12k-k9sec-3.4.0.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.4.0 | AA01795 | hfr-k9sec-3.4.0.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.4.1 | AA01783 | c12k-k9sec-3.4.1.CSCsg41084 |
|---------------------+-----------------+-----------------------------|
| 3.4.1 | AA01794 | hfr-k9sec-3.4.1.CSCsg41084 |
+---------------------------------------------------------------------+
IOS XR Package Installation Envelopes (PIE) can be downloaded from File
Exchange at:
https://upload.cisco.com/cgi-bin/swc/fileexg/main.cgi?CONTYPES=IOS-XR
Installation instructions are included in the accompanying .txt files.
Cisco PIX and ASA Security Appliance
+-----------------------------------
This vulnerability is fixed in the following 7.x software releases:
7.0(6.7),
7.1(2.27), 7.2(1.22), 7.2(2). All 8.x software releases do contain the
fixed
library and are not affected. No 6.x software releases are affected by
this
vulnerability.
Cisco Firewall Service Module (FWSM)
+-----------------------------------
This vulnerability is fixed in the following software releases:
* 2.3(5) maintenance release, expected in 2007-June
* 3.1(6) maintenance release, expected in 2007-June
Cisco Unified CallManager
+------------------------
This vulnerability is fixed in the following software releases.
* 4.0(x) releases are vulnerable but no fix will be provided.
Customers are
advised to upgrade to the fixed 4.1 or 4.2 software.
* 4.1(3)sr.5 expected in 2007-May-24
* 4.2(3)sr.2 expected in 2007-May
* 4.3(1)sr.1 expected 2007-Jun
* 5.0(4) - no fixed software planned, users should upgrade to 5.1(2)
* 5.1(1) - no fixed software planned, users should upgrade to 5.1(2)
* 5.1(2)
Workarounds
===========
The only way to prevent a device being susceptible to the listed
vulnerabilities is to disable the affected service(s). However, if
regular
maintenance and operation of the device relies on these services then
there is
no workaround.
It is possible to mitigate these vulnerabilities by preventing
unauthorized hosts to access the affected devices. Additional
mitigations
that can be deployed on Cisco devices within the network are available
in the Cisco Applied Intelligence companion document for this advisory:
http://www.cisco.com/warp/ public/707/cisco-air-20070522-crypto.shtml
Control Plane Policing (CoPP)
+----------------------------
Control Plane Policing: IOS software versions that support Control Plane
Policing (CoPP) can be configured to help protect the device from
attacks that
target the management and control planes. CoPP is available in Cisco IOS
release trains 12.0S, 12.2SX, 12.2S, 12.3T, 12.4, and 12.4T.
In the CoPP example below, the ACL entries that match the exploit
packets with
the permit action will be discarded by the policy-map drop function,
while
packets that match a deny action (not shown) are not affected by the
policy-map
drop function.
!-- Include deny statements up front for any protocols/ports/IP
addresses that
!-- should not be impacted by CoPP
!-- Include permit statements for the protocols/ports that will be
governed by CoPP
!-- port 443 - HTTPS
access-list 100 permit tcp any any eq 443
!-- port 500 - IKE
access-list 100 permit udp any any eq 500
!-- port 848 - GDOI
access-list 100 permit tcp any any eq 848
!-- port 5060 - SIP-TLS
access-list 100 permit tcp any any eq 5060
!-- port 5354 - TIDP
access-list 100 permit tcp any any eq 5354
!-- Permit (Police or Drop)/Deny (Allow) all other Layer3 and Layer4
!-- traffic in accordance with existing security policies and
!-- configurations for traffic that is authorized to be sent
!-- to infrastructure devices.
!
!-- Create a Class-Map for traffic to be policed by
!-- the CoPP feature.
!
class-map match-all Drop-Known-Undesirable
match access-group 100
!
!-- Create a Policy-Map that will be applied to the
!-- Control-Plane of the device.
!
policy-map CoPP-Input-Policy
class Drop-Known-Undesirable
drop
!-- Apply the Policy-Map to the Control-Plane of the
!-- device.
!
control-plane
service-policy input CoPP-Input-Policy
Please note that in the 12.0S, 12.2S, and 12.2SX Cisco IOS trains, the
policy-map syntax is different:
policy-map CoPP-Input-Policy
class Drop-Known-Undesirable
police 32000 1500 1500 conform-action drop exceed-action drop
NOTE: In the above CoPP example, the ACL entries with the "permit"
action that
match the exploit packets result in the discarding of those packets by
the
policy-map drop function, while packets that match the "deny" action are
not
affected by the policy-map drop function.
Additional information on the configuration and use of the CoPP
feature can be found at
http://www.cisco.com/en/US/products/ps6642/products_white_paper0900aecd8
04fa16a.shtml
and
http://www.cisco.com/en/US/products/sw/iosswrel/ps1838/products_feature_
guide09186a008052446b.html
Access Control List (ACL)
+------------------------
Access control lists can be used to help mitigate attacks that may try
to
exploit these vulnerabilities. This is done in a way that only packets
from the
legitimate sources are allowed to reach the device and all others are
dropped.
access-list 101 permit tcp host <legitimate_host_IP_address> host
<router_IP_address> eq 443
access-list 101 permit udp host <legitimate_host_IP_address> host
<router_IP_address> eq 500
access-list 101 permit tcp host <legitimate_host_IP_address> host
<router_IP_address> eq 506
access-list 101 permit tcp host <legitimate_host_IP_address> host
<router_IP_address> eq 4848
access-list 101 permit tcp host <legitimate_host_IP_address> host
<router_IP_address> eq 5060
access-list 101 permit tcp host <legitimate_host_IP_address> host
<router_IP_address> eq 5354
access-list 101 deny tcp any any eq 443
access-list 101 deny udp any any eq 500
access-list 101 deny tcp any any eq 506
access-list 101 deny udp any any eq 4848
access-list 101 deny tcp any any eq 5060
access-list 101 deny tcp any any eq 5354
Obtaining Fixed Software
========================
Cisco has made free software available to address this vulnerability for
affected customers. Prior to deploying software, customers should
consult their
maintenance provider or check the software for feature set compatibility
and
known issues specific to their environment.
Customers may only install and expect support for the feature
sets they have purchased. By installing, downloading, accessing
or otherwise using such software upgrades, customers agree to be
bound by the terms of Cisco's software license terms found at
http://www.cisco.com/public/sw-license-agreement.html, or as otherwise
set forth at Cisco.com Downloads at
http://www.cisco.com/public/sw-center/sw-usingswc.shtml.
Do not contact either "psirt at cisco.com" or "security-alert at cisco.com"
for
software upgrades.
Customers with Service Contracts
+-------------------------------
Customers with contracts should obtain upgraded software through their
regular
update channels. For most customers, this means that upgrades should be
obtained through the Software Center on Cisco's worldwide website at
http://www.cisco.com.
Customers using Third-party Support Organizations
+------------------------------------------------
Customers whose Cisco products are provided or maintained through prior
or
existing agreement with third-party support organizations such as Cisco
Partners, authorized resellers, or service providers should contact that
support organization for guidance and assistance with the appropriate
course of
action in regards to this advisory.
The effectiveness of any workaround or fix is dependent on specific
customer
situations such as product mix, network topology, traffic behavior, and
organizational mission. Due to the variety of affected products and
releases,
customers should consult with their service provider or support
organization to
ensure any applied workaround or fix is the most appropriate for use in
the
intended network before it is deployed.
Customers without Service Contracts
+----------------------------------
Customers who purchase direct from Cisco but who do not hold a Cisco
service
contract and customers who purchase through third-party vendors but are
unsuccessful at obtaining fixed software through their point of sale
should get
their upgrades by contacting the Cisco Technical Assistance Center
(TAC). TAC
contacts are as follows.
* +1 800 553 2447 (toll free from within North America)
* +1 408 526 7209 (toll call from anywhere in the world)
* e-mail: tac at cisco.com
Have your product serial number available and give the URL of this
notice as
evidence of your entitlement to a free upgrade. Free upgrades for
non-contract
customers must be requested through the TAC.
Refer to http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml for
additional TAC contact information, including special localized
telephone
numbers and instructions and e-mail addresses for use in various
languages.
Exploitation and Public Announcements
=====================================
The Cisco PSIRT is not aware of any public announcements or malicious
use of
the vulnerability described in this Advisory.
This vulnerability was discovered by Cisco during internal testing.
Status of This Notice: Interim
==============================
THIS DOCUMENT IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY
KIND OF
GUARANTEE OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR
FITNESS
FOR A PARTICULAR USE. YOUR USE OF THE INFORMATION ON THE DOCUMENT OR
MATERIALS
LINKED FROM THE DOCUMENT IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT
TO
CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME. CISCO EXPECTS TO UPDATE THIS
DOCUMENT AS NEW INFORMATION BECOMES AVAILABLE.
A stand-alone copy or Paraphrase of the text of this document that omits
the
distribution URL in the following section is an uncontrolled copy, and
may lack
important information or contain factual errors.
Distribution
============
This advisory is posted on Cisco's worldwide website at
http://www.cisco.com/warp/public/707/cisco-sa-20070522-crypto.shtml.
In addition to worldwide web posting, a text version of this notice is
clear-signed with the Cisco PSIRT PGP key and is posted to the following
e-mail
and Usenet news recipients.
* cust-security-announce at cisco.com
* first-teams at first.org
* bugtraq at securityfocus.com
* vulnwatch at vulnwatch.org
* cisco at spot.colorado.edu
* cisco-nsp at puck.nether.net
* full-disclosure at lists.grok.org.uk
* comp.dcom.sys.cisco at newsgate.cisco.com
Future updates of this advisory, if any, will be placed on Cisco's
worldwide
website, but may or may not be actively announced on mailing lists or
newsgroups. Users concerned about this problem are encouraged to check
the
above URL for any updates.
Revision History
================
+---------------------------------------------------------------------+
| Revision 1.0 | 2007-May-22 | Initial public release. |
+---------------------------------------------------------------------+
Cisco Security Procedures
=========================
Complete information on reporting security vulnerabilities in Cisco
products,
obtaining assistance with security incidents, and registering to receive
security information from Cisco, is available on Cisco's worldwide
website at
http://www.cisco.com/en/US/products/products_security_vulnerability_poli
cy.html
This includes instructions for press inquiries regarding Cisco security
notices. All Cisco security advisories are available at
http://www.cisco.com/go/psirt.
-
------------------------------------------------------------------------
-------
All contents are Copyright 2006-2007 Cisco Systems, Inc. All rights
reserved.
-
------------------------------------------------------------------------
-------
Updated: May 22, 2007 Document
ID: 91890
-
------------------------------------------------------------------------
-------
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------------------------------
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