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Subject: Cisco Security Advisory: Cisco IOS Software and IOS XE Software TCP Packet Memory Leak Vulnerability
From: Cisco Systems Product Security Incident Response Team <[log in to unmask]>
Reply-To:[log in to unmask]
Date:Wed, 25 Mar 2015 12:04:40 -0400
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Cisco IOS Software and IOS XE Software TCP Packet Memory Leak Vulnerability

Advisory ID: cisco-sa-20150325-tcpleak

Revision 1.0

For Public Release 2015 March 25 16:00  UTC (GMT)

Summary
=======

A vulnerability in the TCP input module of Cisco IOS and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a memory leak and eventual reload of the affected device.

The vulnerability is due to improper handling of certain crafted packet sequences used in establishing a TCP three-way handshake. An attacker could exploit this vulnerability by sending a crafted sequence of TCP packets while establishing a three-way handshake. A successful exploit could allow the attacker to cause a memory leak and eventual reload of the affected device.

Cisco has released free software updates that address this vulnerability. Workarounds that mitigate this vulnerability are not available.

This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150325-tcpleak

Note: The March 25, 2015, Cisco IOS & XE Software Security Advisory bundled publication includes seven Cisco Security Advisories. The advisories address vulnerabilities in Cisco IOS Software and Cisco IOS XE Software. Individual publication links are in Cisco Event Response: Semiannual Cisco IOS & XE Software Security Advisory Bundled Publication at the following link:
http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_mar15.html

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