Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
admidio< 4.0.4–CNA

Scores by source

GitHub_M (CNA)9.6CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N

References

refgithub.com/Admidio/admidio/security/advisories/GHSA-xpqj-67r8-25j2refgithub.com/Admidio/admidio/issues/994refgithub.com/Admidio/admidio/releases/tag/v4.0.4