-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Cisco Security Advisory: Cisco Adaptive Security Appliance Software DHCPv6 Relay Denial of Service Vulnerability Advisory ID: cisco-sa-20160420-asa-dhcpv6 Revision 1.0 For Public Release 2016 April 20 16:00 GMT (UTC) +--------------------------------------------------------------------- Summary ======= A vulnerability in the DHCPv6 relay feature of Cisco Adaptive Security Appliance (ASA) Software could allow an unauthenticated, remote attacker to cause an affected device to reload. The vulnerability is due to insufficient validation of DHCPv6 packets. An attacker could exploit this vulnerability by sending crafted DHCPv6 packets to an affected device, resulting in a denial of service (DoS) condition. This vulnerability affects systems configured in routed firewall mode and in single or multiple context mode. Cisco ASA Software is affected by this vulnerability only if the software is configured with the DHCPv6 relay feature. The vulnerability is triggered only by IPv6 traffic. This vulnerability affects Cisco ASA Software release 9.4.1 only. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160420-asa-dhcpv6 -----BEGIN PGP SIGNATURE----- Version: GnuPG/MacGPG2 v2 Comment: GPGTools - https://gpgtools.org iQIcBAEBCgAGBQJXF3DCAAoJEK89gD3EAJB5pscP/A82fZg0GxmGGZlQR0YGSC/F M1jaBmDHh1/Hofa0Wi1jTsUiEQBFRh/NzrW7PAF1xxz8oFA09l050HOXc1uqbwyl kFZn5/gnNOOl8FJ7E7Uq3yB1690XelnFMV5T86tiFTssmAHJWjtc/H/F/C8pate6 yNxm/ns+XJKODkgFId8WtXSiRm2TLSc7KaLSb4CiAy8IZzKyu1jXE7CNWvzdfi+y FdBR8nVdqZDW0VTJ6dVzYcWls3+wbcJAesZtAWJS9RhbV5hWlumOVmbJe78wMff4 ZBZ/qy8yS3xSqA2qjNbPgszJuhTwudNKAagOOpkPUxze36s5J3Z+LKOaPGHKWgiD rK/WVa7M2nD8N92NsOt/VQQ8D3KPW+iZ4UN4heQ8A/JC7/4OAc8bKt1cwkpspslX /r2ihH0grTksybKjTGwHus0c4fWB5rKGeVZagb8rEiYi0hbGAblruUr6ovFlhA0U 2gpgwoXtQSj0DZLzPRfqxTEAZ2reC+Ny6TqbW1qokl43sWxguNW9lfJPxU1G1ub2 vIKwxz+Utq3xWQ9wvSDQ8lT3mJTj+Mu4KQNC6YEzd6kxJCf8z6Bseg2JMJyTlMRh FADKRiamRkfQhUa8C6J4DQa4PFIQb7oVbaNBKuSKZd77mGM/+6L1mXF1/TGlnLgH VfzhOiSQd2rx3zyxsjG1 =nIGk -----END PGP SIGNATURE-----
