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Cisco Security Advisory: Cisco IOS Software Network Address Translation Vulnerability

 

The Cisco IOS Software Network Address Translation (NAT) feature contains a denial of service (DoS) vulnerability in the translation of Session Initiation Protocol (SIP) packets.

The vulnerability is caused when packets in transit on the vulnerable device require translation on the SIP payload.

Cisco has released free software updates that address this vulnerability. A workaround that mitigates the vulnerability is available.

This advisory is available at the following link:

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120328-nat

 

 

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