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NotSanguine [soylentnews.org] writes:

Multiple sources (including Cisco [cisco.com], CERT [cert.org] and NIST [nist.gov]) are reporting on a critical buffer overflow vulnerability in Cisco software running on its ASA platforms.

From the Cisco advisory [cisco.com]:

A vulnerability in the Internet Key Exchange (IKE) version 1 (v1) and IKE version 2 (v2) code of Cisco ASA Software could allow an unauthenticated, remote attacker to cause a reload of the affected system or to remotely execute code.

The vulnerability is due to a buffer overflow in the affected code area. An attacker could exploit this vulnerability by sending crafted UDP packets to the affected system. An exploit could allow the attacker to execute arbitrary code and obtain full control of the system or to cause a reload of the affected system.

Note: Only traffic directed to the affected system can be used to exploit this vulnerability. This vulnerability affects systems configured in routed firewall mode only and in single or multiple context mode. This vulnerability can be triggered by IPv4 and IPv6 traffic.

Cisco has released software updates that address this vulnerability.

Affected software versions/platforms are as follows:
ASA Software: before 8.4(7.30), 8.7 before 8.7(1.18), 9.0 before 9.0(4.38), 9.1 before 9.1(7), 9.2 before 9.2(4.5), 9.3 before 9.3(3.7), 9.4 before 9.4(2.4), and 9.5 before 9.5(2.2).
On the following platforms: ASA 5500, ASA 5500-X, ASA Services Module for Cisco Catalyst 6500 and Cisco 7600, ASA 1000V, Adaptive Security Virtual Appliance (aka ASAv), Firepower 9300 ASA Security Module, and ISA 3000.

CERT Vulnerability ID: VU#327976 [cert.org].
CVE ID: 2016-1287 [nist.gov].
Cisco Advisory: cisco-sa-20160210 [cisco.com].
Cisco Bug IDs (Cisco login required): CSCux29978 [cisco.com] and CSCux42019 [cisco.com].

Original Submission