Cisco IOS Software Network Address Translation Vulnerabilities (cisco-sa-20110928-nat)

high Nessus Plugin ID 56318


The remote device is missing a vendor-supplied security patch.


The Cisco IOS Software network address translation (NAT) feature contains multiple denial of service (DoS) vulnerabilities in the translation of the following protocols :

- NetMeeting Directory (Lightweight Directory Access Protocol, LDAP)

- Session Initiation Protocol. (Multiple vulnerabilities)

- H.323 protocol

All the vulnerabilities described in this document are caused by packets in transit on the affected devices when those packets require application layer translation. Cisco has released free software updates that address these vulnerabilities.


Apply the relevant patch referenced in Cisco Security Advisory cisco-sa-20110928-nat.

See Also

Plugin Details

Severity: High

ID: 56318

File Name: cisco-sa-20110928-nathttp.nasl

Version: 1.20

Type: combined

Family: CISCO

Published: 9/29/2011

Updated: 11/15/2018

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: High

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Vulnerability Information

CPE: cpe:/o:cisco:ios

Required KB Items: Host/Cisco/IOS/Version

Patch Publication Date: 9/21/2012

Vulnerability Publication Date: 9/28/2011

Reference Information

CVE: CVE-2011-3276, CVE-2011-3277, CVE-2011-3278, CVE-2011-3279, CVE-2011-3280