Technical Description

A vulnerability has been identified in Cisco Session Border Controller (SBC) for the Cisco 7600 series routers, which could be exploited by attackers to cause a denial of service. This issue is caused by an error when processing specially crafted TCP packets sent over port 2000, which could be exploited to cause a vulnerable card to reload, creating a denial of service conditon.

Affected Products

Cisco Session Border Controller (SBC) for the Cisco 7600 series routers running software versions prior to 3.0(2)

Solution

Upgrade to version 3.0(2) :
http://www.cisco.com/pcgi-bin/tablebuild.pl/sbc-7600-crypto

References

http://www.vupen.com/english/advisories/2009/0602
http://www.cisco.com/warp/public/707/cisco-sa-20090304-sbc.shtml

Credits

Vulnerability reported by the vendor.

ChangeLog

2009-03-05 : Initial release

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