Security Alert
Three Security advisories to address severely rated vulnerabilities in Cisco Operating System Software (IOS).

Description
Cisco just released three security bulletins for address several vulnerabilities in Cisco Operating System Software (IOS). One of the vulnerability "Crafted IP OptionĄ¨ creates a potential means for hackers to attack on a range of Cisco routers and switches running IOS. Attacks would have worked by sending certain ICMP, PIMv2, PGM or URD packets with a specific IP option set to a Cisco device, and causing the hardware to either crash or execute arbitrary code. The flaw applies to most of the code base of IOS 12.0, 12.1 and 12.2.

For details about the bulletins, please refer to:

http://www.cisco.com/warp/public/707/cisco-sa-20070124-crafted-ip-option.shtml

http://www.cisco.com/warp/public/707/cisco-sa-20070124-crafted-tcp.shtml

http://www.cisco.com/warp/public/707/cisco-sa-20070124-IOS-IPv6.shtml


 Suggested Solutions
It is recommended to apply the fixes and workarounds described in the Cisco Security Advisories and Vulnerability Notes.

Detecting and mitigating cisco-sa-20070124-crafted-tcp

Detecting and mitigating cisco-sa-20070124-crafted-ip-option

Detecting and mitigating cisco-sa-20070124-IOS-IPv6

Source
Cisco Systems
 
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