Some vulnerabilities have been discovered in TomatoCMS, which can be exploited by malicious users to conduct script insertion attacks and compromise a vulnerable system and by malicious people to conduct cross-site scripting and cross-site request forgery attacks.

1) Input passed via the "keyword" and "bannerid" parameters to index.php/admin/ad/banner/list is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in the users browser in context of the affected site.

2) Input passed via the "title" and "answers" parameters to index.php/admin/poll/add is not properly sanitised before being displayed to the user. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.

Successful exploitation requires "Create new poll" permissions.

3) Input passed via the "name" parameter to index.php/admin/category/add is not properly sanitised before being displayed to the user. This can be exploited to insert arbitrary HTML and script code, which will be executed in a user's browser session in context of an affected site when the malicious data is being viewed.

Successful exploitation requires "Create new category" permissions.

4) 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. change the administrative password by tricking a logged-in administrative user into visiting a malicious web site.

5) Input passed via the "keyword" and "article-id" parameters to index.php/admin/news/article/list, the "keyword" parameter to index.php/admin/multimedia/set/list, the "keyword" and "fileId" parameters to index.php/admin/multimedia/file/list, and the "name", "email", and "address" parameters to index.php/admin/ad/client/list is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in the users browser in context of the affected site.

6) An error exists in the validation of uploaded image files while adding a new article. This can be exploited to upload arbitrary files inside the webroot and e.g. execute arbitrary PHP code.

Successful exploitation of this vulnerability requires "Add new article", "Upload file to server", and "Browse uploaded files" permissions.

The vulnerabilities are confirmed in version 2.0.6. Other versions may also be affected.

Solution
Edit the source code to ensure that input is properly sanitised. Do not browse untrusted websites or follow untrusted links while logged in to the application. Grant only trusted users "Add new article", "Upload file to server", and "Browse uploaded files" permissions.

Provided and/or discovered by
1 - 4) Reported by Russ McRee, HolisticInfoSec via Secunia.
5, 6) Secunia Research.

Changelog
Further details available in Customer Area

Original Advisory
Secunia Research:
http://secunia.com/secunia_research/2010-57/
http://secunia.com/secunia_research/2010-58/

Russ McRee:
http://holisticinfosec.org/content/view/148/45/

Deep Links
Links available in Customer Area