Description
Yamcs is a mission control framework. Prior to 5.12.7, the IAM API endpoints listUsers, getUser, listGroups, and getGroup in yamcs-core did not enforce the required SystemPrivilege.ControlAccess check in yamcs-core/src/main/java/org/yamcs/http/api/IamApi.java, so any authenticated user, even one with low or no privileges, could enumerate all user accounts in the system including their usernames, superuser status, and group memberships. This issue is fixed in versions 5.12.7 and 5.13.0.
CVSS breakdown
CVSS 3.1
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Affected products
- spaceapplications / yamcs5.12.7
- yamcs / yamcs< 5.12.7 – < 5.12.7
Exploits & proofs of concept
- exploit-dbYAMCS yamcs-core 5.12.7 - User Enumerationby Daniel Miranda
References
- VENDOR_ADVISORYhttps://github.com/yamcs/yamcs/security/advisories/GHSA-p2rj-mrmc-9w29
- PATCHhttps://github.com/yamcs/yamcs/commit/0e12b518f103f24681299318a30a460fe4327b88
- PATCHhttps://github.com/yamcs/yamcs/commit/e90099fba98e96214217c195b6a5b87b5f46e51c
- PATCHhttps://github.com/yamcs/yamcs/releases/tag/yamcs-5.12.7
- PATCHhttps://github.com/yamcs/yamcs/releases/tag/yamcs-5.13.0
Updated 13m ago · 8 sources