Guest

Preview Tool

Cisco Bug: CSCur21069 - Cisco ASA Failover Command Injection Vulnerability

Last Modified

Nov 09, 2016

Products (1)

  • Cisco ASA 5500-X Series Firewalls

Known Affected Releases

9.2(0.1)

Description (partial)

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

    Cisco ASA Failover Command Injection Vulnerability
    Cisco ASA DNS Memory Exhaustion Vulnerability
    Cisco ASA VPN XML Parser Denial of Service Vulnerability

Successful exploitation of the Cisco ASA Failover Command Injection Vulnerability would allow an attacker to submit failover commands to the failover units,  which may result in an attacker taking full control of the systems.

Successful exploitation of the Cisco ASA DNS Memory Exhaustion Vulnerability may result in system instability and dropped traffic.

Successful exploitation of the Cisco ASA VPN XML Parser Denial of Service Vulnerability may result in a crash of the WebVPN process, which may lead to the reset of all SSL VPN connections, system instability, and a reload of the affected system.


Cisco has released free software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are available for the Cisco ASA Failover Command Injection Vulnerability and Cisco ASA DNS Memory Exhaustion Vulnerability. This advisory is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-asa

Note: The resolution of the vulnerability in the Cisco Security Advisory Cisco ASA FirePOWER Services and Cisco ASA CX Crafted Packets Denial of Service Vulnerability, cisco-sa-20150408-cxfp,  released on the 8th of April may require an upgrade of the Cisco ASA Software release. Cisco ASA customers should review cisco-sa-20150408-cxfp before deciding which Cisco ASA Software release to upgrade to.

The Cisco Security Advisory Cisco ASA FirePOWER Services and Cisco ASA CX Crafted Packets Denial of Service Vulnerability is available at the following link:
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20150408-cxfp

Conditions:
See published Cisco Security Advisory
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.