Description: Jason Lau has discovered two vulnerabilities in PHP-Nuke, which can be exploited by malicious people to conduct SQL injection and script insertion attacks.
1) Input passed to the "ublock" parameter in the "Your_Home" functionality of the "Your_Account" module isn't properly sanitised before being saved as the user's personal menu. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site when the user views his personal menu.
Example:
<img src=javascript:[code]>
(requires the Microsoft Internet Explorer browser)
2) Input passed to the "user_id" parameter in the "Your_Home" functionality of the "Your_Account" module isn't properly sanitised before being used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code. This can be further exploited with vulnerability #1 to inject arbitrary HTML and script code into arbitrary user's personal menu.
Successful exploitation requires that "magic_quotes_gpc" is disabled.
The vulnerabilities have been confirmed in version 7.8. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised.
Provided and/or discovered by: Jason Lau
Changelog: 2006-04-26: Added CVE references.
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