80vul has reported some vulnerabilities in Crossday Discuz! Board, which can be exploited by malicious users to compromise a vulnerable system and malicious people to bypass certain security restrictions.

1) Input passed via the "creditsformula" parameter in wap/index.php is not properly sanitised before being used. This can be exploited to execute arbitrary PHP code on an affected system.

2) A security issue is caused due to a design error in the application. This can be exploited to bypass certain security restrictions and e.g. reset user passwords.

Solution
Edit the source code to ensure that input is properly sanitised and implement proper access restrictions.

Provided and/or discovered by
80vul

Changelog
Further details available to Secunia VIM customers

Original Advisory
80vul:
1) http://www.80vul.com/dzvul/sodb/13/dz-exp-sodb-2008-13_php.htm
2) http://www.80vul.com/dzvul/sodb/14/dz-exp-sodb-2008-14_php.htm

Discuz!:
1) http://www.discuz.net/archiver/?tid-1112426.html

Deep Links
Links available to Secunia VIM customers