Nico Leidecker has discovered some vulnerabilities in Papoo CMS, which can be exploited by malicious users and malicious people to conduct script insertion and cross-site scripting attacks, and by malicious users to bypass certain security restrictions or to conduct SQL injection attacks.
1) Input passed via the URL 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 "formthema" form field parameter when posting comments is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which is executed in an administrative user's browser session context of an affected site when the malicious data is viewed.
3) Input passed to the "uberschrift" and "inhalt" form field parameters when sending internal mails is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which is executed in an administrative user's browser session in context of an affected site when the malicious data is viewed.
4) Input passed to the "selmenuid" in the administration backend is not properly sanitised before being used in an SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
Successful exploitation requires privileges to modify the navigation menu.
5) The problem is that it is possible to access certain administrative plugins without proper privileges by changing the "template" parameter. This can e.g. be exploited to download a database backup.
Successful exploitation of vulnerabilities #3 through #5 requires valid user credentials.
The vulnerabilities are confirmed in Papoo Light 3.6. Other versions may also be affected.
Solution: Edit the source code to ensure that input is properly sanitised.
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Subject: Papoo CMS Multiple Vulnerabilities
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