Cisco ASA Software Vulnerability - UPDATE

Purpose

CCIRC is releasing this Advisory UPDATE that contains additional information related to this vulnerability.

Assessment

The detection signatures referenced below are provided to aid organizations in detecting and mitigating malicious exploitation of this vulnerability.

IPS Sigs:
Cisco IPS : 7169-0 , Snort Sig: 36903 
Cisco IPS Signature is available in update S908

Suggested Action

Due to the elevated risk presented by this vulnerability, CCIRC recommends that system administrators test and deploy the vendor-released firmware updates to affected versions accordingly. CCIRC recommends that priority is given to these patches.

References:

Cisco ASA Software IKEv1 and IKEv2 Vulnerability Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160210-asa-ike

Exodus: Execute My Packet
https://blog.exodusintel.com/2016/02/10/firewall-hacking/

Cisco ASA Software Vulnerability

Number: AV16-028
Date: 10 February 2016

Purpose

The purpose of this advisory is to bring attention to recent critical software update that addresses a disclosed vulnerability in Cisco ASA IKEv1 and IKEv2.

Assessment

CCIRC is aware of a recently disclosed vulnerability in Cisco ASA software IKEv1 and IKEv2.

This vulnerability could allow an unauthenticated remote attacker to execute code or cause a reload of the affected system. This is due to a buffer overflow that could be triggered in the current version of the software.

Affected Product :

Suggested Action

Due to the elevated risk presented by this vulnerability, CCIRC recommends that system administrators test and deploy the vendor-released firmware updates to affected versions accordingly. CCIRC recommends that priority is given to these patches.

References:

Cisco ASA Software IKEv1 and IKEv2 Vulnerability Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160210-asa-ike

Note to Readers

In support of Public Safety's mission to build a safe and resilient Canada, CCIRC's mandate is to help ensure the security and resilience of the vital non-federal government cyber systems that underpin Canada's national security, public safety and economic prosperity. As Canada's computer security incident response team, CCIRC is Canada's national coordination centre for the prevention and mitigation of, preparedness for, response to, and recovery from cyber incidents on non-federal government systems. It does this by providing authoritative advice and support, and coordinating information sharing and incident response.

Please note, CCIRC PGP key has recently been updated.
http://www.publicsafety.gc.ca/cnt/ntnl-scrt/cbr-scrt/_fl/CCIRCPublicPGPKey.txt

For general information, please contact Public Safety Canada's Public Affairs division at:

Telephone: 613-944-4875 or 1-800-830-3118
Fax: 613-998-9589
E-mail: ps.communications-communications.sp@canada.ca

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