ILIAS versions before 9.23, 10.11, and 11.4 contain an authorization bypass vulnerability in ilObjGroupGUI where saveMapSettingsObject() and updateGroupTypeObject() perform state-changing operations without write permission checks. Authenticated users with only read access to a group can craft POST requests to modify group map settings and didactic template assignments, changing group modes and permissions for all members.
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
None
No data leak
Integrity
Low
Partial data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 8
https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdC…
disclosure@vulncheck.com
https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdC…
disclosure@vulncheck.com
https://docu.ilias.de/ilias.php?baseClass=ilrepositorygui&cmdNode=wy:ll:6t&cmdC…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/clas…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/blob/v11.3/components/ILIAS/Group/clas…
disclosure@vulncheck.com
https://github.com/ILIAS-eLearning/ILIAS/commit/16bca712847f83440fa051cdbb15b38…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/ilias-before-9.23-10.11-and-11.4-missing-a…
disclosure@vulncheck.com