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Cisco Security Advisory 20130925-dhcp

Cisco Security Advisory 20130925-dhcp
Posted Sep 25, 2013
Authored by Cisco Systems | Site cisco.com

Cisco Security Advisory - A vulnerability in the DHCP 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 occurs during the parsing of crafted DHCP packets. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that has the DHCP server or DHCP relay feature enabled. An exploit could allow the attacker to cause a reload of an affected device. Cisco has released free software updates that address this vulnerability. There are no workarounds to this vulnerability.

tags | advisory, remote, denial of service
systems | cisco, osx
SHA-256 | 3d9eb0899aae2d9787ea19cb3bb54f490cd6578d496a6ab8a7ae73ee913e03fd

Cisco Security Advisory 20130925-dhcp

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Cisco IOS Software DHCP Denial of Service Vulnerability

Advisory ID: cisco-sa-20130925-dhcp

Revision 1.0

For Public Release 2013 September 25 16:00 UTC (GMT)
- ----------------------------------------------------------------------

Summary
=======

A vulnerability in the DHCP 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 occurs during the parsing of crafted DHCP packets. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that has the DHCP server or DHCP relay feature enabled. An exploit could allow the attacker to cause a reload of an affected device.

Cisco has released free software updates that address this vulnerability. There are no workarounds to this vulnerability.

This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20130925-dhcp

Note: The September 25, 2013, Cisco IOS Software Security Advisory bundled publication includes eight Cisco Security Advisories. All advisories address vulnerabilities in Cisco IOS Software. Each Cisco IOS Software Security Advisory lists the Cisco IOS Software releases that correct the vulnerability or vulnerabilities detailed in the advisory as well as the Cisco IOS Software releases that correct all Cisco IOS Software vulnerabilities in the September 2013 bundled publication.

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_sep13.html
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