VAR-200007-0069

Vulnerability from variot - Updated: 2025-04-03 22:26

An administrative script from IIS 3.0, later included in IIS 4.0 and 5.0, allows remote attackers to cause a denial of service by accessing the script without a particular argument, aka the "Absent Directory Browser Argument" vulnerability. Microsoft IIS 3.0 shipped with a number of HTR scripts, one of which could be used to cause a Denial of Service against the hosting machine. Although these scripts were only distributed with IIS 3.0, they would be retained during upgrade to 4.0 or 5.0 and therefore these versions may be vulnerable if they were installed as an upgrade to 3.0. The vulnerable script is used to browse directories and normally expects a directory name as a variable. If a request with this variable blank is received, the script enters an infinite loop resulting in system resource exhaustion. No further details were made available by Microsoft

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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