Description
FOSSBilling is a free, open-source billing and client management system. Versions prior to 0.8.0 allow low-privileged staff accounts to perform unauthorized actions via admin API endpoints. The root cause is a combination of the `can_always_access` module flag (which grants all staff access to certain modules) and insufficient permission checks or unsafe parameter handling on individual endpoints. Version 0.8.0 contains a fix. Some workarounds are available. Restrict staff accounts to only those who need access to sensitive settings and/or use a reverse proxy or WAF to restrict access to the affected endpoints to trusted IP addresses or higher-privilege roles.
Problem types
CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
CWE-639: Authorization Bypass Through User-Controlled Key
CWE-862: Missing Authorization
Product status
References
github.com/...illing/security/advisories/GHSA-563q-g4r4-6f9m