Cisco Unified Communications Manager SIP JOIN denial of service

cucm-sip-join-dos (42417) The risk level is classified as LowLow Risk

Description:

Cisco Unified Communications Manager is vulnerable to a denial of service, caused by the improper handling of messages. By sending a specially-crafted SIP JOIN message, a remote attacker could exploit this vulnerability to cause the service to terminate.

Platforms Affected:

  • Cisco, Unified Communications Manager 5.0
  • Cisco, Unified Communications Manager 5.1
  • Cisco, Unified Communications Manager 5.1(1)
  • Cisco, Unified Communications Manager 5.1(2)
  • Cisco, Unified Communications Manager 5.1(2b)
  • Cisco, Unified Communications Manager 6.0
  • Cisco, Unified Communications Manager 6.0(1a)
  • Cisco, Unified Communications Manager 6.1(1a)

Remedy:

Refer to cisco-sa-20080514-cucmdos for patch, upgrade or suggested workaround information. See References.

Consequences:

Denial of Service

References:

  • cisco-sa-20080514-cucmdos, Cisco Unified Communications Manager Denial of Service Vulnerabilities at http://www.cisco.com/warp/public/707/cisco-sa-20080514-cucmdos.shtml.
  • BID-29221: Cisco Unified Communications Manager Multiple Denial of Service Vulnerabilities
  • CVE-2008-1745: Cisco Unified Communications Manager (CUCM) 5.x before 5.1(2) and 6.x before 6.1(1) allows remote attackers to cause a denial of service (service interruption) via a SIP JOIN message with a malformed header, aka Bug ID CSCsi48115.
  • FrSIRT/ADV-2008-1533: Cisco Unified Communications Manager Denial of Service Vulnerabilities
  • SA30238: Cisco Unified Communications Manager Multiple Denial of Service
  • SECTRACK ID: 1020022: Cisco Unified Communications Manager Bugs in CTL CAPF, SIP, and SNMP Services Let Remote Users Deny Service

Reported:

May 14, 2008

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