Active Directory Invalid Free Vulnerability

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  Severity: CRITICAL

  CVE Identifier: CVE-2009-1138

  Advisory Date: FEB 15, 2011

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  DESCRIPTION

The LDAP service in Active Directory on Microsoft Windows 2000 SP4 does not properly free memory for LDAP and LDAPS requests, which allows remote attackers to execute arbitrary code via a request that uses hexadecimal encoding, whose associated memory is not released, related to a "DN AttributeValue," aka "Active Directory Invalid Free Vulnerability." NOTE: this issue is probably a memory leak.

  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: 1003565

  Trend Micro Deep Security DPI Rule Name: 1003565 - Active Directory Invalid Free Vulnerability

  AFFECTED SOFTWARE AND VERSION

• microsoft windows_2000