Description
Admidio is a free, open source user management system for websites of organizations and groups. In Admidio before version 4.0.4, there is an authenticated RCE via .phar file upload. A php web shell can be uploaded via the Documents & Files upload feature. Someone with upload permissions could rename the php shell with a .phar extension, visit the file, triggering the payload for a reverse/bind shell. This can be mitigated by excluding a .phar file extension to be uploaded (like you did with .php .phtml .php5 etc). The vulnerability is patched in version 4.0.4.
References to Advisories, Solutions, and Tools
References to Advisories, Solutions, and Tools
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Resourcehttps://github.com/Admidio/admidio/issues/994https://github.com/Admidio/admidio/releases/tag/v4.0.4https://github.com/Admidio/admidio/security/advisories/GHSA-xpqj-67r8-25j2
