Some vulnerabilities have been discovered in Maian Cart, which can be exploited by malicious people to conduct cross-site scripting attacks and to bypass certain security restrictions.

1) Input passed to the "keywords" parameter in index.php (when "cmd" is set to "search") 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.

2) Input passed to the "msg_adminheader", "msg_adminheader2", "msg_adminheader3", and "msg_adminheader4" parameters in admin/inc/header.php, and "msg_script3" in admin/inc/footer.php 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.

3) A vulnerability is caused due to improper access restriction in the admin/index.php script. This can be exploited to bypass the authentication mechanism and gain access to the administration section by setting the "mccart_cookie" cookie.

The vulnerabilities are confirmed in version 1.1. Other versions may also be affected.

Solution
Edit the source code to ensure that input is properly sanitised. Restrict access to the admin/index.php script (e.g. with ".htaccess").

Provided and/or discovered by
1) Russ McRee
2) Khashayar Fereidani a.k.a. Dr.Crash
3) Saime

Changelog
Further details available to Secunia VIM customers

Original Advisory
3) http://milw0rm.com/exploits/6047

Deep Links
Links available to Secunia VIM customers