Nortel Communication Server FTP denial of service

nortel-ftp-dos (41804) The risk level is classified as MediumMedium Risk

Description:

Nortel Communication Server is vulnerable to a denial of service, caused by an error in the session limitation technique when running on VGMC or signaling nodes. A remote attacker could consume all available FTP sessions, which could prevent the firmware from updating configuration files resulting in a denial of service.

*CVSS:

Base Score: 5
  Access Vector: Network
  Access Complexity: Low
  Authentication: None
  Confidentiality Impact: None
  Integrity Impact: None
  Availability Impact: Partial
 
Temporal Score: 4
  Exploitability: Unproven
  Remediation Level: Unavailable
  Report Confidence: Uncorroborated

Consequences:

Denial of Service

Remedy:

No remedy available as of September 1, 2014.

References:

  • NORTEL BULLETIN ID: 2008008764, Rev 1: Nortel: Technical Support: Nortel response to VoIP potential security vulnerabilities in CS 1000.
  • VoIP Security Advisory: CS1000 FTP Session Limit Exhaustion.
  • BID-28691: Nortel Networks Communication Server 1000 Multiple Security Vulnerabilities
  • CVE-2008-6576: Unspecified vulnerability in the session limitation technique in the FTP service on Nortel Communications Server 1000 (CS1K) 4.50.x, when running on VGMC or signaling nodes, allows remote attackers to cause a denial of service (resource exhaustion and failed updates) via unknown vectors that causes consumption of all available sessions.
  • OSVDB ID: 44380: Nortel Networks Communication Server 1000 FTP Service Unspecified DoS
  • SA29747: Nortel Networks Communication Server Multiple Vulnerabilities
  • SECTRACK ID: 1019845: Nortel Communication Server 1000 Firmware Update FTP Service Can Be Blocked By Remote Users

Platforms Affected:

  • Nortel CS1000 4.5

Reported:

Apr 10, 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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