Multiple vulnerabilities have been discovered in Plume CMS, which can be exploited by malicious people to conduct cross-site request forgery attacks.
1) The application allows users to perform certain HTTP requests without performing any validity checks to verify the requests. This can be exploited to e.g. change the administrator's password by tricking a logged in administrator into visiting a malicious web site.
2) Input passed via the "u_realname" POST parameter to manager/users.php and "c_author" POST parameter to manager/news.php when editing a user's profile or posting a comment is not properly sanitised before being used. 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 of this vulnerability requires "Administrator" privileges.
The vulnerabilities are confirmed in version 1.2.4. Other versions may also be affected.
Solution: Do not browse untrusted sites or follow untrusted links while being logged-in to the application. Edit the source code to ensure that input is properly sanitised.
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Subject: Plume CMS Cross-Site Request Forgery and Script Insertion Vulnerabilities
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