CVE-2004-0847

CRITICAL EXPLOITED

Microsoft .NET - Auth Bypass

Title source: llm

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."

Exploits (1)

exploitdb WORKING POC VERIFIED

by anonymous · textwebappsasp

https://www.exploit-db.com/exploits/24666

View Code ZIP pw:eip

References (9)

[Exploit, Vendor Advisory] http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.html

[Broken Link] http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754

[Third Party Advisory, US Government Resource] http://www.kb.cert.org/vuls/id/283646

[Third Party Advisory, VDB Entry] http://www.securityfocus.com/bid/11342

[Third Party Advisory, US Government Resource] http://www.us-cert.gov/cas/techalerts/TA05-039A.html

[Third Party Advisory, VDB Entry] https://exchange.xforce.ibmcloud.com/vulnerabilities/17644

[Third Party Advisory] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A3556

[Third Party Advisory] https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A4987

[Vendor Advisory] https://docs.microsoft.com/en-us/security-updates/securitybulletins/2005/ms05-004

Scores

CVSS v3 9.8

EPSS 0.5283

EPSS Percentile 98.0%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

VulnCheck KEV 2005-02-08

CWE

CWE-22

Status published

Products (2)

microsoft/asp.net 1.1 sp1

microsoft/asp.net < 1.1

Published Nov 03, 2004

Tracked Since Feb 18, 2026