Cisco Unified Communications Manager CTLProvider.exe TCPFUZZ denial of service

cucm-ctl-tcpfuzz-dos (42410) The risk level is classified as MediumMedium Risk

Description:

The Certificate Trust List (CTL) Provider service (CTLProvider.exe) of the Cisco Unified Communications Manager (CUCM) is vulnerable to a denial of service. By sending specially-crafted TCP packets to port 2444, a remote attacker could exploit this vulnerability to consume all available memory resources, resulting in a denial of service.

*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-20080514-cucmdos for patch, upgrade or suggested workaround information. See References.

References:

  • cisco-sa-20080514-cucmdos: Cisco Unified Communications Manager Denial of Service Vulnerabilities.
  • BID-29221: Cisco Unified Communications Manager Multiple Denial of Service Vulnerabilities
  • CVE-2008-1742: Memory leak in the Certificate Trust List (CTL) Provider service in Cisco Unified Communications Manager (CUCM) 5.x before 5.1(3) allows remote attackers to cause a denial of service (memory consumption and service interruption) via a series of malformed TCP packets, as demonstrated by TCPFUZZ, aka Bug ID CSCsj80609.
  • OSVDB ID: 45209: Cisco Unified Communications Manager Certificate Trust List (CTL) Provider Service TCP Packet Handling Memory Consumption Remote DoS (CSCsj80609)
  • 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

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)

Reported:

May 14, 2008

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