[alextselegidis/easyappointments] Privilege escalation in easyappointments

The Easy!Appointments API authorization is checked against the user’s existence, without validating the permissions. As a result, a low privileged user (eg. provider) can create a new admin user via the “/api/v1/admins/” endpoint and take over the system. A patch is available on the develop branch of the repository.

References

• https://nvd.nist.gov/vuln/detail/CVE-2022-1397
• https://github.com/alextselegidis/easyappointments/commit/63dbb51decfcc1631c398ecd6d30e3a337845526
• https://huntr.dev/bounties/5f69e094-ab8c-47a3-b01d-8c12a3b14c61
• https://github.com/advisories/GHSA-7f62-4887-cfv5