Secunia Logo  


Secunia PSI WorldMap
 
Microsoft .NET Framework URL Path Validation Canonicalization Vulnerability
Secunia Advisory: SA12749
Release Date: 2004-10-08
Last Update: 2005-11-21
Popularity: 16,715 views

Critical:
Moderately critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:ASP.NET 1.x
Microsoft .NET Framework 1.x

Secunia CVSS-2 Score: Available in Secunia business solutions

Subscribe: Instant alerts on relevant vulnerabilities


Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
Toby Beaumont has reported a vulnerability in Microsoft .NET Framework, which can be exploited by malicious people to bypass certain security restrictions.

The vulnerability is caused due to a canonicalization error in the ASP.NET component's authentication schema when validating URL paths. This can be exploited to bypass forms based authentication or Windows authorization configurations by using a specially crafted URL.

Example:
http://[victim]/secure%5Cfile.apx

Successful exploitation can e.g. lead to exposure of sensitive information.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released.

Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.

Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.
  
Latest Advisories

6th Nov, 2009
New advisories: 17
New vulnerabilities: 65
Updated advisories: 21

Less // 328 views
Debian update for linux-2.6.24
Less // 314 views
Debian update for linux-2.6
Moderately // 296 views
Gentoo update for horde
Less // 309 views
Fedora update for kernel
Less // 300 views
Fedora update for kernel
Moderately // 303 views
Ubuntu update for libgd2
Moderately // 316 views
Ubuntu update for libgd2
Highly // 318 views
Fedora update for alienarena-data

Solutions | More...  


Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com.

Ideas, suggestions, and other feedback are most welcome.

Most Popular - 3 Hours

1. Sun Java JDK / JRE Multiple Vulnerabilities // 102 views
2. Adobe Flash Player Multiple Vulnerabilities // 53 views
3. Internet Explorer Charset Inheritance Cross-Site Scripting Vulnerability // 51 views
4. Adobe Reader/Acrobat Multiple Vulnerabilities // 33 views
5. Google Chrome Two Vulnerabilities // 29 views
6. Mozilla Firefox Multiple Vulnerabilities // 26 views
7. Apple QuickTime Multiple Vulnerabilities // 15 views
8. Microsoft .NET Framework Multiple Vulnerabilities // 13 views
9. Microsoft Products GDI+ Multiple Vulnerabilities // 13 views
10. avast! Home/Professional Multiple Vulnerabilities // 10 views