Secunia

Some vulnerabilities and a security issue have been discovered in Siteman, which can be exploited by malicious people to disclose sensitive information or conduct cross-site scripting and cross-site request forgery attacks, and by malicious users to conduct script insertion attacks.

1) User information is being stored within the data/members.txt file inside the web root. This can be exploited to disclose usernames, email addresses, and MD5 password hashes.

2) A vulnerability is caused due to the application allowing users to perform certain actions via HTTP requests without performing any validity checks to verify the request. This can be exploited to e.g. ban users, validate accounts, or modify menu entries by enticing a logged-in administrator to visit a malicious site.

3) Input passed to the "topic" parameter in forum.php when "do" equals "viewtopic" 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 an affected site.

4) Input passed to the "sign" parameter in users.php is not properly sanitised before being stored. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious data is being viewed.

5) Input passed to the "cat" parameter in articles.php (when "do" is set to "viewart" and "id" to "%00") is not properly sanitised before being used. This can be exploited to display arbitrary files through directory traversal attacks.

Successful exploitation of this vulnerability requires that "magic_quotes_gpc" is disabled.

The vulnerabilities and the security issue are confirmed in version 1.1.11. Other versions may also be affected.

Solution
Restrict access to data/members.txt (e.g. with an ".htaccess" file).
Further details available in Customer Area

Provided and/or discovered by
1) CorryL
2, 3, 4) nights shadow
5) IRCRASH (Dr.Crash)

Changelog
Further details available in Customer Area

Original Advisory
5) http://milw0rm.com/exploits/4973

Deep Links
Links available in Customer Area