Exponent CMS multiple vulnerabilities

Multiple vulnerabilities have been discovered in Exponent CMS, which can be exploited by malicious people to conduct cross-site request forgery attacks and disclose sensitive information, according to Secunia.

1. The application allows users to perform certain actions via HTTP requests without performing any validity checks to verify the requests. This can be exploited to e.g. create an arbitrary user with administrative privileges if a logged-in administrative user visits a malicious web site.

2. Input passed via the “controller” parameter to content_selector.php (when “section” and “action” are set) is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources via directory traversal sequences and URL-encoded NULL bytes.

Successful exploitation of this vulnerability requires that “magic_quotes_gpc” is disabled.

3. Input passed via the “file” parameter to framework/modules/pixidou/download.php is not properly verified before being used to download files. This can be exploited to download arbitrary files from local resources via directory traversal sequences.

Successful exploitation of this vulnerability requires that “magic_quotes_gpc” is disabled.

The vulnerabilities are confirmed in version 2.0.0 beta2.1. Other versions may also be affected.

Solution: Edit the source code to ensure that input is properly sanitised and verified. Do not browse untrusted sites or follow untrusted links while being logged-in to the application.