CVEvulnerability

CVE-2004-0847

9.8 CRITICAL Published 2004-11-03 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2004-11-03
Last modified
2026-06-16
Assigner
[email protected]
CVSS 3.0 ([email protected])
9.8 CRITICAL — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0 ([email protected])
7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
Weaknesses
CWE-22

Description

The Microsoft .NET forms authentication capability for ASP.NET allows remote attackers to bypass authentication for .aspx files in restricted directories via a request containing a (1) "\" (backslash) or (2) "%5C" (encoded backslash), aka "Path Validation Vulnerability."

Affected configurations

• microsoft asp.net (<= 1.1) • microsoft asp.net 1.1

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

Referenced by CWE · observed example (5)

  • CWE-162 Improper Neutralization of Trailing Special Elements weakness
  • CWE-177 Improper Handling of URL Encoding (Hex Encoding) weakness
  • CWE-289 Authentication Bypass by Alternate Name weakness
  • CWE-41 Improper Resolution of Path Equivalence weakness
  • CWE-54 Path Equivalence: 'filedir\' (Trailing Backslash) weakness

References