Executive brief
Netatalk, an open-source implementation of the Apple Filing Protocol (AFP) used for file sharing, contains a security flaw where LDAP passwords are recorded in plain text within system logs. If an LDAP connection fails, sensitive service account credentials may be exposed to anyone with access to the server's log files. This could allow an unauthorized individual to gain administrative access to directory services or other connected systems.
Technical details
A CWE-532 (Insertion of Sensitive Information into Log File) vulnerability exists in Netatalk versions 2.1.0 through 4.4.2. When the software is configured to use LDAP for authentication, a 'simple-bind' failure triggers a logging event that includes the cleartext password in the output. This typically occurs during LDAP service outages or restarts. An attacker with read access to the logs can recover service account credentials, leading to potential lateral movement or further compromise of the directory service. The issue is resolved in Netatalk version 4.4.3 or by applying a specific security patch to version 4.4.2.
Affected products
- Netatalk Netatalk 2.1.0 through 4.4.2
Timeline
- 2026-05-13: disclosed
- 2026-05-21: advisory: NVD publication date
- 2026-05-21: patched: Fixed in version 4.4.3