Cisco Firewall Services Module DCERPC buffer overflow

cisco-fwsm-dcerpc-bo (79173) The risk level is classified as HighHigh Risk

Description:

Cisco Firewall Services Module (FWSM) is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the DCERPC inspection engine. By sending specially-crafted DCERPC packets, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.

*CVSS:

Base Score: 9
  Access Vector: Network
  Access Complexity: Medium
  Authentication: None
  Confidentiality Impact: Complete
  Integrity Impact: Partial
  Availability Impact: Complete
 
Temporal Score: 6.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Gain Access

Remedy:

Refer to cisco-sa-20121010-fwsm for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20121010-asa: Multiple Vulnerabilities in Cisco ASA 5500 Series Adaptive Security Appliances and Cisco Catalyst 6500 Series ASA Services Module.
  • cisco-sa-20121010-fwsm: Multiple Vulnerabilities in Cisco Firewall Services Module .
  • BID-55863: Multiple Cisco Products CVE-2012-4661 Buffer Overflow Vulnerability
  • CVE-2012-4661: Stack-based buffer overflow in the DCERPC inspection engine on Cisco Adaptive Security Appliances (ASA) 5500 series devices, and the ASA Services Module (ASASM) in Cisco Catalyst 6500 series devices, with software 8.3 before 8.3(2.34), 8.4 before 8.4(4.4), 8.5 before 8.5(1.13), and 8.6 before 8.6(1.3) and the Firewall Services Module (FWSM) 4.1 before 4.1(9) in Cisco Catalyst 6500 series switches and 7600 series routers might allow remote attackers to execute arbitrary code via a crafted DCERPC packet, aka Bug IDs CSCtr21359 and CSCtr27522.
  • OSVDB ID: 86146: Cisco Firewall Services Module (FWSM) DCERPC Inspection Engine Transit DCERPC Traffic Parsing Remote Overflow
  • SA50857: Cisco Firewall Services Module DCERPC Three Vulnerabilities

Platforms Affected:

  • Cisco Adaptive Security Appliance 7.0
  • Cisco Adaptive Security Appliance 8.0
  • Cisco ASA 5500 Series Adaptive Security Appliance 8.4
  • Cisco Firewall Services Module 3.1
  • Cisco Firewall Services Module 3.2
  • Cisco Firewall Services Module 4.0
  • Cisco Firewall Services Module 4.1

Reported:

Oct 10, 2012

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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

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