Description
Traccar 3.15 before 6.17.0 contains an authentication bypass vulnerability in LdapProvider.login() that fails to reject empty passwords, causing LDAP binds to be performed as unauthenticated binds when LDAP authentication is enabled. Unauthenticated attackers who know a valid username can log in via POST /api/session or HTTP Basic authentication with an empty password against directories that permit unauthenticated binds, obtaining sessions for any account including administrators.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Traccar | Traccar | 3.15 – < 6.17.0 | 6.17.0 |
References
- https://github.com/traccar/traccar/commit/552c31f2097dbed9edef7cfe174c50b16febdc21 patch
- Traccar v6.17.0 Release Notes release-notes
- https://github.com/traccar/traccar/blob/v6.16.0/src/main/java/org/traccar/database/LdapProvider.java#L171-L176 technical-description
- https://github.com/traccar/traccar/blob/v3.15/src/org/traccar/database/LdapProvider.java#L163-L169 technical-description
- VulnCheck Advisory: Traccar 3.15 before 6.17.0 Authentication Bypass via Empty LDAP Password third-party-advisory