Cisco IOS SIP packet handling denial of service

cisco-sip-packet-dos (31990) The risk level is classified as MediumMedium Risk

Description:

Cisco devices running certain versions of voice supported Cisco Internetwork Operating System Software (IOS) are vulnerable to a denial of service, caused by improper handling of Session Initiated Protocol (SIP) packets over port 5060. If SIP is disabled, a remote attacker could send specially-crafted SIP packets to cause the device to reload, resulting in a denial of service.

*CVSS:

Base Score: 5
  Access Vector: Remote
  Access Complexity: Low
  Authentication: Not Required
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Complete
 
Temporal Score: 3.7
  Exploitability: Unproven
  Remediation Level: Official-Fix
  Report Confidence: Confirmed

Consequences:

Denial of Service

Remedy:

Refer to cisco-sa-20070131-sip for patch, upgrade, or suggested workaround information. See References.

References:

  • cisco-sa-20070131-sip: Cisco Security Advisory: SIP Packet Reloads IOS Devices Not Configured for SIP.
  • BID-22330: Cisco IOS SIP Packet Handling Remote Denial Of Service Vulnerability
  • CVE-2007-0648: Cisco IOS after 12.3(14)T, 12.3(8)YC1, 12.3(8)YG, and 12.4, with voice support and without Session Initiated Protocol (SIP) configured, allows remote attackers to cause a denial of service (crash) by sending a crafted packet to port 5060/UDP.
  • OSVDB ID: 33051: Cisco IOS SIP Packet Handling Reload DoS
  • SA23978: Cisco IOS SIP Packet Handling Reload Denial of Service
  • SECTRACK ID: 1017575: Cisco IOS Can Be Crashed in Certain Cases By Remote Users Sending SIP Packets
  • US-CERT VU#438176: Cisco IOS fails to properly handle Session Initiated Protocol packets

Platforms Affected:

  • Cisco IOS 12.3
  • Cisco IOS 12.3(14)T
  • Cisco IOS 12.3YG
  • Cisco IOS 12.3YK
  • Cisco IOS 12.3YM
  • Cisco IOS 12.3YQ
  • Cisco IOS 12.3YT
  • Cisco IOS 12.3YU
  • Cisco IOS 12.3YX
  • Cisco IOS 12.4MR
  • Cisco IOS 12.4SW
  • Cisco IOS 12.4T
  • Cisco IOS 12.4XA
  • Cisco IOS 12.4XB
  • Cisco IOS 12.4XC
  • Cisco IOS 12.4XD
  • Cisco IOS 12.4XE
  • Cisco IOS 12.4XG
  • Cisco IOS 12.4XJ
  • Cisco IOS 12.4XP
  • Cisco IOS 12.4XT

Reported:

Jan 31, 2007

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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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