ILIAS before 9.24, 10.12, and 11.5 contains an unrestricted file upload vulnerability in QTI question import image handling (ilQtiMatImageSecurity) that allows authenticated authors to write executable files. Attackers with question pool import rights can import a crafted archive writing a .htaccess and PHP file to the web-served image directory, achieving remote code execution as the web server user.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v4.0
Weakness Type (CWE)
References 9
https://docu.ilias.de/go/blog/15821/950
disclosure@vulncheck.com
https://docu.ilias.de/go/blog/15821/951
disclosure@vulncheck.com
https://docu.ilias.de/go/blog/15821/952
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/blob/v10.11/components/ILIAS/QTI/class…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/commit/47c8462bf46bbebd543a9f3b39c7896…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/commit/58ee5b1767212530f9948adb0e7d5ae…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/commit/5b200351330bee698432a45c0877c5b…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/ilias-before-9.24-10.12-and-11.5-unrestric…
disclosure@vulncheck.com