Multiple Vulnerabilities in Cisco ASA and Cisco Firewall Services Module Software

Number: AV13-037
Date: 11 October 2013

Purpose

The purpose of this advisory is to bring attention to multiple vulnerabilities in Cisco ASA and Cisco Firewall Services Module Software.

Assessment

1. Cisco Adaptive Security Appliance (ASA) Software is affected by the following vulnerabilities:

Depending on the vulnerability, successful exploitation may result in a reload of an affected device leading to a denial of service (DoS) condition, authentication bypass which could allow the attacker access to the inside network or result in general system instability and cause the affected system to become unresponsive and stop forwarding traffic.

2. Cisco Firewall Services Module (FWSM) Software for Cisco Catalyst 6500 Series Switches and Cisco 7600 Series Routers is affected by the following vulnerabilities:

Successful exploitation may result in a complete compromise of the confidentiality, integrity and availability of the affected system or result in a reload of an affected device leading to a denial of service (DoS) condition.

Suggested action

Cisco has released free software updates that address these vulnerabilities. Workarounds are available for some of the vulnerabilities.

CCIRC recommends that systems administrators identify their affected assets and potential interdependencies with organization's critical services and follow their patch management process accordingly.

References:

  1. http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131009-asa
  2. http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20131009-fwsm

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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