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Cisco Security Advisory 20140924-dhcpv6

Cisco Security Advisory 20140924-dhcpv6
Posted Sep 25, 2014
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the DHCP version 6 (DHCPv6) server implementation of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper parsing of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending malformed DHCPv6 packets to be processed by an affected device. An exploit could allow the attacker to cause a memory leak and eventual reload of an affected device.

tags | advisory, remote, denial of service, memory leak
systems | cisco, osx
SHA-256 | e93171093b995dcfbce411a598dfdb3fd5744117c4e5f800cdb73e8f76d5a63c

Cisco Security Advisory 20140924-dhcpv6

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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Cisco IOS Software DHCP Version 6 Denial of Service Vulnerability

Advisory ID: cisco-sa-20140924-dhcpv6

Revision 1.0

For Public Release 2014 September 24 16:00 UTC (GMT)

Summary
+======

A vulnerability in the DHCP version 6 (DHCPv6) server implementation of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

The vulnerability is due to improper parsing of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending malformed DHCPv6 packets to be processed by an affected device. An exploit could allow the attacker to cause a memory leak and eventual reload of an affected device.

Cisco has released free software updates that address this vulnerability. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20140924-dhcpv6

Note: The September 24, 2014, Cisco IOS Software Security Advisory bundled publication includes six Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Individual publication links are in Cisco Event Response: Semiannual Cisco IOS Software Security Advisory Bundled Publication at the following link:

http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep14.html



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