Microsoft Office Communicator SIP Remote Denial of Service Vulnerability

Publish date: February 25, 2011
  Severity: MEDIUM
  CVE Identifier: CVE-2008-5180
  Advisory Date: FEB 25, 2011

  DESCRIPTION

Microsoft Office Communicator is prone to a remote denial-of-service vulnerability that arises during SIP protocol handling. Exploiting this issue allows remote attackers to cause denial-of-service conditions. This issue affects Microsoft Office Communicator 2010 beta; other versions may also be affected. Microsoft Communicator, and Communicator in Microsoft Office 2010 beta, allows remote attackers to cause a denial of service (memory consumption) via a large number of SIP INVITE requests, which trigger the creation of many sessions.

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1003089
  Trend Micro Deep Security DPI Rule Name: 1003089 - Microsoft Communicator SIP INVITE Request Handling Denial Of Service

  AFFECTED SOFTWARE AND VERSION

  • Microsoft Office Communicator

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