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Vulnerability Details : CVE-2004-0847

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."
Publish Date : 2004-11-03 Last Update Date : 2008-09-10
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- CVSS Scores & Vulnerability Types

CVSS Score
7.5
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access User
Vulnerability Type(s) Bypass a restriction or similar
CWE ID CWE id is not defined for this vulnerability

- Related OVAL Definitions

Title Definition Id Class Family
Microsoft .NET Framework v1.1 Security Bypass oval:org.mitre.oval:def:3556 windows
Microsoft .NET Framework v1.0 Security Bypass oval:org.mitre.oval:def:4987 windows
MS05-004: ASP.NET Path Validation Vulnerability (887219) oval:gov.nist.fdcc.patch:def:11528 windows
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2004-0847

# Product Type Vendor Product Version Update Edition Language
1 Application Microsoft Asp.net Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Microsoft Asp.net 1

- References For CVE-2004-0847

http://www.securityfocus.com/bid/11342
BID 11342 Microsoft ASP.NET URI Canonicalization Unauthorized Web Access Vulnerability Release Date:2007-10-10
http://archives.neohapsis.com/archives/ntbugtraq/2004-q3/0221.html
NTBUGTRAQ 20040914 Security bug in .NET Forms Authentication
http://technet.microsoft.com/en-us/security/bulletin/ms05-004
Microsoft Security Bulletin MS05-004
http://xforce.iss.net/xforce/xfdb/17644
XF windows-forms-security-bypass(17644)
http://www.us-cert.gov/cas/techalerts/TA05-039A.html
CERT TA05-039A
http://www.kb.cert.org/vuls/id/283646
CERT-VN VU#283646
http://sourceforge.net/mailarchive/forum.php?thread_id=5671607&forum_id=24754

- Metasploit Modules Related To CVE-2004-0847

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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