youlai-boot through 2.21.1 contains a missing authorization vulnerability that allows authenticated users to assign arbitrary menu and button permissions to roles via PUT /api/v1/roles/{roleId}/menus. Low-privileged users such as the GUEST test account can grant all permissions to their own role, refreshing the Redis permission cache to gain administrator-equivalent access.
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 5
https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai…
disclosure@vulncheck.com
https://github.com/youlaitech/youlai-boot/blob/v2.21.1/src/main/java/com/youlai…
disclosure@vulncheck.com
https://github.com/youlaitech/youlai-boot/commit/36d2db6dc559817bd4e02b1f33b199…
disclosure@vulncheck.com
https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/youlai-boot-role-menu-assignment-and-…
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/youlai-boot-through-2.21.1-missing-authori…
disclosure@vulncheck.com