Secunia

Some vulnerabilities have been reported in vtiger CRM, which can be exploited by malicious users to disclose sensitive information, bypass certain security restrictions, and compromise a vulnerable system, and by malicious people to conduct cross-site scripting and cross-site request forgery attacks and disclose potentially sensitive information.

1) An error exists in the file upload functionality due to the emails module not properly checking file names and extensions. This can be exploited to upload files and e.g. execute arbitrary PHP code.

Successful exploitation requires a valid user account.

2) The application allows users to perform certain actions via HTTP requests without performing any validation checks to verify the requests. This can be exploited to e.g. add additional RSS feeds.

3) Input passed to the "module" parameter in graph.php is not properly verified before being used to include files. This can be exploited to include arbitrary files from local resources.

4) Input passed to the "action" parameter in phprint.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.

5) The application does not properly restrict users from accessing certain disabled fields, which can be exploited by creating a custom view for the calendar.

6) The application does not properly restrict users from overwriting the "Account Billing Address" and "Shipping Address".

7) The application does not properly restrict users from inserting and deleting filters, attachments, and reports.

Solution
Reportedly fixed in version 5.1.0.

Provided and/or discovered by
1-4) Giovanni "evilaliv3" Pellerano, Antonio "s4tan" Parata, and Francesco "ascii" Ongaro
5) Reported in a bug by bharathi
6) Reported in a bug by vashni
7) VinOnTiger

Changelog
Further details available in Customer Area

Original Advisory
1-4) http://www.ush.it/2009/08/18/vtiger-crm-504-multiple-vulnerabilities/
5) http://trac.vtiger.com/cgi-bin/trac.cgi/ticket/4208
6) http://trac.vtiger.com/cgi-bin/trac.cgi/ticket/5055
7) http://forums.vtiger.com/viewtopic.php?t=16756
http://trac.vtiger.com/cgi-bin/trac.cgi/ticket/5249

Deep Links
Links available in Customer Area