Description: A vulnerability has been reported in Cisco Intrusion Prevention System, which can be exploited by malicious people to bypass certain security restrictions.
The vulnerability is caused due to insufficient inspection of fragmented IP packets. This can be exploited to bypass the Intrusion Prevention System to e.g. access internal systems by sending specially crafted IP packets.
The vulnerability affects the following products:
- Cisco IPS 5.0(x) software prior to 5.0(6p2)
- Cisco IPS 5.1(x) software prior to 5.1(2)
Solution: Apply updated software.
Cisco IPS 5.0(6p1) and earlier:
Cisco IPS 5.0(6p2)
Cisco IPS 5.1(1) and earlier:
Cisco IPS 5.1(2)
Provided and/or discovered by: Reported by the vendor.
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.
Ideas, suggestions, and other feedback are most welcome.
