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PostNuke Cross-Site Scripting and SQL Injection Vulnerabilities
Secunia Advisory: SA14868
Release Date: 2005-04-08
Last Update: 2005-05-23
Popularity: 8,039 views

Critical:
Less critical
Impact: Cross Site Scripting
Where: From remote
Solution Status: Vendor Patch

Software:PostNuke 0.x

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CVE reference:CVE-2005-1048
CVE-2005-1049
CVE-2005-1050


Description:
Diabolic Crab has reported some vulnerabilities in PostNuke, which can be exploited by malicious people to conduct SQL injection and cross-site scripting attacks.

1) Input passed to the "module" parameter in "admin.php" and the "op" parameter in "user.php" is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of a vulnerable site.

These vulnerabilities have been reported in version 0.760-rc3. According to the vendor, the "user.php" vulnerability has been confirmed when the default pnAntiCracker has been disabled.

2) Input passed to the "sid" parameter isn't properly sanitised before being used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

Example:
http://[victim]/modules.php?op=modload&name=News&file=article&sid=[code]&POSTNUKESID=[id]

This issue has been reported in version 0.760-rc3. However, according to the vendor, it has not been possible to reproduce it.

Solution:
Update to version 0.750b.
http://news.postnuke.com/modules.php?...=index&req=viewdownload&cid=1

Provided and/or discovered by:
Diabolic Crab

Changelog:
2005-04-14: Added CVE references.
2005-05-23: Updated "Solution" section.

Original Advisory:
http://digitalparadox.org/advisories/postnuke.txt


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