Cisco PIX and ASA SIP inspection denial of service

cisco-pix-asa-sipinspection-dos (44866) The risk level is classified as MediumMedium Risk

Description:

Cisco PIX and ASA devices are vulnerable to a denial of service, caused by multiple processing errors when configured for SIP inspection. A remote attacker could exploit this vulnerability using a specially-crafted SIP packet to cause the device to reload.

*CVSS:

Base Score: 7.8
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 5.8
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to cisco-sa-20080903-asa for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20080903-asa: Cisco Security Advisory: Remote Access VPN and SIP Vulnerabilities in Cisco PIX and Cisco ASA.
  • BID-30998: Cisco PIX and Cisco ASA Multiple Denial of Service and Information Disclosure Vulnerabilities
  • CVE-2008-2732: Multiple unspecified vulnerabilities in the SIP inspection functionality in Cisco PIX and Adaptive Security Appliance (ASA) 5500 devices 7.0 before 7.0(7)16, 7.1 before 7.1(2)71, 7.2 before 7.2(4)7, 8.0 before 8.0(3)20, and 8.1 before 8.1(1)8 allow remote attackers to cause a denial of service (device reload) via unknown vectors, aka Bug IDs CSCsq07867, CSCsq57091, CSCsk60581, and CSCsq39315.
  • OSVDB ID: 47920: Cisco PIX / ASA SIP Packet Processing Remote DoS
  • SA31730: Cisco ASA and PIX Security Appliances Multiple Vulnerabilities
  • SECTRACK ID: 1020808: Cisco ASA SIP Inspection Processing Bugs Let Remote Users Deny Service
  • SECTRACK ID: 1020809: Cisco PIX SIP Inspection Processing Bugs Let Remote Users Deny Service

Platforms Affected:

  • Cisco Adaptive Security Appliance 7.0
  • Cisco Adaptive Security Appliance 7.1
  • Cisco Adaptive Security Appliance 7.2
  • Cisco Adaptive Security Appliance 8.0
  • Cisco Adaptive Security Appliance 8.1
  • Cisco PIX Security Appliance 7.0
  • Cisco PIX Security Appliance 7.1
  • Cisco PIX Security Appliance 7.2
  • Cisco PIX Security Appliance 8.0
  • Cisco PIX Security Appliance 8.1

Reported:

Sep 03, 2008

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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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