A vulnerability has been reported in various Cisco products, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to an error in the handling of full-width and half-width unicode encoded HTTP traffic. This can be exploited to bypass content scanning and evade detection by an IPS or firewall.
The vulnerability affects the following products:
* Cisco Intrusion Prevention System (IPS)
* Cisco IOS with Firewall/IPS Feature Set
Solution: No fix or workaround is currently available.
Provided and/or discovered by: Fatih Ozavci and Caglar Cakici, GamaSEC
Original Advisory: Cisco:
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