Secunia

Some vulnerabilities have been discovered in ADN Forum, which can be exploited by malicious people to conduct script insertion and SQL injection attacks and bypass certain security restrictions.

1) Input passed to the "fid" parameter in "index.php" and the "pagid" parameter in "verpag.php" isn't properly sanitised before being used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation requires that "magic_quotes_gpc" is disabled.

2) Input passed to the "titulo" parameter when posting a message isn't properly sanitised before being used. This can be exploited to inject arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious user data is viewed.

3) A vulnerability is caused due to an error in the authentication mechanism. This can be exploited to gain access to other user accounts by changing the first and third fields in the base64 encoded "fpusuario" cookie value to another user name.

The vulnerabilities have been confirmed in version 1.0b. Other versions may also be affected.

Solution
Edit the source code to ensure that input is properly sanitised.

Provided and/or discovered by
1, 2) Aliaksandr Hartsuyeu
3) Pepelux

Changelog
Further details available in Customer Area

Original Advisory
http://evuln.com/vulns/15/summary.html
http://milw0rm.com/exploits/6557

Deep Links
Links available in Customer Area