Microsoft Windows Embedded OpenType Font Denial Of Service

Publish date: February 25, 2011
  Severity: HIGH
  CVE Identifier: CVE-2009-3020
  Advisory Date: FEB 25, 2011

  DESCRIPTION

A vulnerability exists in Microsoft Windows, which can be exploited to cause a DoS (Denial of Service). The vulnerability is caused due to an error when processing Embedded OpenType fonts. This can be exploited to crash an affected system. win32k.sys in Microsoft Windows Server 2003 SP2 allows remote attackers to cause a denial of service (system crash) by referencing a crafted .eot file in the src descriptor of an @font-face Cascading Style Sheets (CSS) rule in an HTML document, possibly related to the Embedded OpenType (EOT) Font Engine, a different vulnerability than CVE-2006-0010, CVE-2009-0231, and CVE-2009-0232. NOTE: some of these details are obtained from third party information.

  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: 1003685
  Trend Micro Deep Security DPI Rule Name: 1003685 - Microsoft Windows Embedded OpenType Font Denial Of Service

  AFFECTED SOFTWARE AND VERSION

  • Microsoft Windows Server 2003

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