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Message-id: <20120926121809.cisco-sa-20120926-dhcp@psirt.cisco.com> Date: Wed, 26 Sep 2012 12:18:34 -0400 From: Cisco Systems Product Security Incident Response Team <psirt@...co.com> To: full-disclosure@...ts.grok.org.uk Cc: psirt@...co.com Subject: Cisco Security Advisory: Cisco IOS Software DHCP Denial of Service Vulnerability -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 Cisco IOS Software DHCP Denial of Service Vulnerability Advisory ID: cisco-sa-20120926-dhcp Revision 1.0 For Public Release 2012 September 26 16:00 UTC (GMT) +--------------------------------------------------------------------- Summary ======= Cisco IOS Software contains a vulnerability that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. An attacker could exploit this vulnerability by sending a single DHCP packet to or through an affected device, causing the device to reload. Cisco has released free software updates that address this vulnerability. A workaround that mitigates this vulnerability is available. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20120926-dhcp Note: The September 26, 2012, Cisco IOS Software Security Advisory bundled publication includes 9 Cisco Security Advisories. Eight of the advisories address vulnerabilities in Cisco IOS Software, and one advisory addresses a vulnerability in Cisco Unified Communications Manager. 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 2012 bundled publication. Individual publication links are in "Cisco Event Response: Semi-Annual Cisco IOS Software Security Advisory Bundled Publication" at the following link: http://www.cisco.com/web/about/security/intelligence/Cisco_ERP_sep12.html -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2.0.18 (Darwin) Comment: GPGTools - http://gpgtools.org iF4EAREIAAYFAlBgeD4ACgkQUddfH3/BbTrJBgD8D/YGAbTV2hF3i3v0Gg8nFc2x jVoS/mVfTMurWAYQflIA/0HU8TpFR6A9Oegidg2Cjc27Vyx2RbAqah6Y57BceTco =WgD1 -----END PGP SIGNATURE----- _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.grok.org.uk/full-disclosure-charter.html Hosted and sponsored by Secunia - http://secunia.com/
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