Cisco Cisco IOS Software Release 12.4(23)

CSCei06089

Symptoms: Conditional advertisement of the default route via a route map does not work when you 
enter the neighbor default-originate command.

Conditions: This symptom is observed on a Cisco router that is configured for BGP.

Workaround: Disable the route map entirely. If this is not an option, there is no workaround. 

CSCsb13988

Symptoms: A router that is configured for NAT may crash because of a bus error.

Conditions: This symptom is observed on a Cisco 7206VXR that runs Cisco IOS Release 12.3(9a) 
but is not platform-specific. The crash occurs while NAT attempts to translate an IP address in an 
H.323 RAS messages that does not contain an IP address.

Workaround: Disable H.323 RAS in NAT by entering the no ip nat service ras command. If you 
must use H.323 RAS in NAT, there is no workaround. 

CSCeh63526

Symptoms: A router crashes at the insp_inspection function.

Conditions: This symptom is observed when the inspection rule is removed and re-added to an 
interface while traffic passes through the interface.

Workaround: There is no workaround. 

CSCei37299

Symptoms: A VPN hub router may reload when you enter the clear crypto session remote 
ip-address command.

Conditions: This symptom is observed after a remote peer disconnects ungracefully (that is, the peer 
is suddenly powered-off or the LAN cable is disconnected) and immediately reconnects to the VPN 
hub router with a different public address.

Workaround: Do not enter the clear crypto session remote ip-address command. Rather, enter the 
clear crypto sa command. 

CSCei61732

Cisco IOS may permit arbitrary code execution after exploitation of a heap-based buffer overflow 
vulnerability. Cisco has included additional integrity checks in its software, as further described 
below, that are intended to reduce the likelihood of arbitrary code execution.

Cisco has made free software available that includes the additional integrity checks for affected 
customers.

This advisory is posted at 

CSCei79855

Symptoms: When Cisco IOS software is secured using “secure boot” commands and after 
formatting the disk, the show disk command will not display the secured image and the 
corresponding configurations in the output.

Conditions: This symptom occurs when securing the Cisco IOS software using the secure 
boot-config and the secure boot- image commands and formatting the disk.