Microsoft IIS Malformed HTTP Request DoS Vulnerability

  Severity: HIGH
  CVE Identifier: CVE-2005-4360,ms07-041
  Advisory Date: FEB 15, 2011

  DESCRIPTION

 The URL parser in Microsoft Internet Information Services (IIS) 5.1 on Windows XP Professional SP2 allows remote attackers to execute arbitrary code via multiple requests to ".dll" followed by arguments such as "~0" through "~9", which causes ntdll.dll to produce a return value that is not correctly handled by IIS, as demonstrated using "/_vti_bin/.dll/*/~0".  NOTE: the consequence was originally believed to be only a denial of service (application crash and reboot).

  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: 1000101
  Trend Micro Deep Security DPI Rule Name: 1000101 - Microsoft IIS Malformed HTTP Request DoS Vulnerability

  AFFECTED SOFTWARE AND VERSION

  • Microsoft IIS 5.1