Microsoft IIS 4.0/5.0 Malformed Filename Request Vulnerability

  Severity: HIGH
  CVE Identifier: CVE-2000-0457
  Advisory Date: FEB 15, 2011

  DESCRIPTION

 ISM.DLL in IIS 4.0 and 5.0 allows remote attackers to read file contents by requesting the file and appending a large number of encoded spaces (%20) and terminated with a .htr extension, aka the ".HTR File Fragment Reading" or "File Fragment Reading via .HTR" vulnerability.

  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: 1000610
  Trend Micro Deep Security DPI Rule Name: 1000610 - Microsoft IIS 4.0/5.0 Malformed Filename Request Vulnerability

  AFFECTED SOFTWARE AND VERSION

  • Microsoft IIS 4.0
  • Microsoft IIS 5.0