[c-nsp] Loss of Telnet Capability to 6509

[Raymond, Steven]

> -----Original Message-----
> From: Richard J. Sears [mailto:rsears at adnc.com]
> Sent: Wednesday, July 28, 2004 11:13 AM
> To: Voll, Scott
> Cc: cisco-nsp at puck.nether.net
> Subject: Re: [c-nsp] Loss of Telnet Capability to 6509
> 
> 
> That is the interesting part. A Who shows a single connection on vty 2
> (a sh line vty 2 seems to agree) but a clear line vty 2 (with 
> a confirm)
> fails to reset the line. The connection still shows active, 
> however idle
> for about 6 hours.
> 
> 
> No other connections show open.

Same symptoms here on a 5500 RSM.  Shows someone logged into vty 0 idle 7.5
hours, despite the exec-timeout being far less than that.

Can't get rid of the phantom session on vty 0.

Can't telnet to the RSM from network nor session in from the Sup.

Smells like a new exploit/DOS?