Cisco IOS NAT SCCP fragmentation denial of service

ios-sccp-fragmentationdos (45535) The risk level is classified as MediumMedium Risk

Description:

Multiple Cisco devices running Cisco IOS are vulnerable to a denial of service, caused by an error when NAT Skinny Call Control Protocol (SCCP) Fragmentation Support feature is enabled. By sending a specially-crafted SCCP messages to a vulnerable device, a remote attacker could 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-20080924-sccp for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20080924-sccp: Cisco Security Advisory: Cisco IOS NAT Skinny Call Control Protocol Vulnerability.
  • BID-31359: Cisco IOS NAT Skinny Call Control Protocol Multiple Remote Denial of Service Vulnerabilities
  • CVE-2008-3811: Cisco IOS 12.2 and 12.4, when NAT Skinny Call Control Protocol (SCCP) Fragmentation Support is enabled, allows remote attackers to cause a denial of service (device reload) via segmented SCCP messages, aka Cisco Bug ID CSCsi17020, a different vulnerability than CVE-2008-3810.
  • OSVDB ID: 48735: Cisco IOS Fragmented Skinny Call Control Protocol (SCCP) Packet Saturation Remote DoS
  • SA31990: Cisco IOS Multiple Vulnerabilities
  • SECTRACK ID: 1020937: Cisco IOS NAT SCCP Processing Bug Lets Remote Users Deny Service

Platforms Affected:

  • Cisco IOS 12.4MD
  • Cisco IOS 12.4MR
  • Cisco IOS 12.4SW
  • Cisco IOS 12.4T
  • Cisco IOS 12.4XC
  • Cisco IOS 12.4XE
  • Cisco IOS 12.4xf
  • Cisco IOS 12.4XG
  • Cisco IOS 12.4XJ
  • Cisco IOS 12.4XK
  • Cisco IOS 12.4XL
  • Cisco IOS 12.4XM
  • Cisco IOS 12.4XN
  • Cisco IOS 12.4XP
  • Cisco IOS 12.4XT
  • Cisco IOS 12.4XV
  • Cisco IOS 12.4XW

Reported:

Sep 24, 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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