Cisco Cisco IOS Software Release 12.2(2)XT

 

A defect in multiple releases of Cisco IOS software will cause a Cisco router or switch to halt and reload 
if the IOS HTTP service is enabled, browsing to http://router-ip/anytext?/ is attempted, and the enable 
password is supplied when requested. This defect can be exploited to produce a denial of service (DoS) 
attack. 

The vulnerability, identified as Cisco bug ID CSCdr91706, affects virtually all mainstream Cisco routers 
and switches running Cisco IOS software releases 12.0 through 12.1, inclusive. This is not the same 
defect as CSCdr36952. 

The vulnerability has been corrected and Cisco is making fixed releases available for free to replace all 
affected IOS releases. Customers are urged to upgrade to releases that are not vulnerable to this defect. 

This vulnerability can only be exploited if the enable password is known or not set. 

You are strongly encouraged to read the complete advisory, which is available at

http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml.

The following sections contain important notes about Cisco IOS Release 12.2(2) XT that can apply to 
the Cisco 3600 series.

The squeeze command, which is used to erase all files marked for deletion on a Flash file system, is now 
available on Cisco 2600 and Cisco 3600 series routers.

In Cisco IOS Release 12.2(2), the range of the output attenuation command for voice ports has changed. 
The old range was 0 to 14. The new range is -6 to 14.

Cisco IOS Release 12.2(2)XT does not support the following features:

Remote Source-Route Bridging (RSRB)

AppleTalk

Apollo Domain

Banyan Virtual Integrated Network Service (VINES)

DECnet

Xerox Network Systems (XNS)