Microsoft IIS Malformed HTTP HOST Header Field Denial Of Service Vulnerability

  Severity: MEDIUM
  CVE Identifier: CVE-2002-1908
  Advisory Date: FEB 15, 2011

  DESCRIPTION

 Microsoft IIS 5.0 and 5.1 allows remote attackers to cause a denial of service (CPU consumption) via an HTTP request with a Host header that contains a large number of "/" (forward slash) characters.

  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: 1000440
  Trend Micro Deep Security DPI Rule Name: 1000440 - Microsoft IIS Malformed HTTP HOST Header Field Denial Of Service Vulnerability

  AFFECTED SOFTWARE AND VERSION

  • Microsoft IIS 5.0
  • Microsoft IIS 5.1