Executive brief
389 Directory Server is an enterprise LDAP directory service used to store and manage user and system information across organizations. A flaw in its replication maintenance operations allows attackers to remove replication replicas, purge changelog records, and disrupt administrative cleanups without proper authorization, potentially leaving the directory service inconsistent or unavailable and affecting business operations that depend on it.
Technical details
The vulnerability is a missing authorization check (CWE-862) in the CleanAllRUV and Abort CleanAllRUV extended operations used for LDAP replication maintenance. These operations perform no authorization validation, allowing an unauthenticated remote attacker to invoke them if nsslapd-allow-anonymous-access is enabled (the default configuration), or any authenticated user regardless of privilege level to invoke them otherwise. An attacker can remove replica IDs from replication metadata, purge changelog records, and interrupt in-progress cleanup operations, leading to replication inconsistencies and potential service unavailability. Exploitation requires network access to the LDAP listener port; patches are pending.
Affected products
- 389 Project 389 Directory Server
Timeline
- 2026-08-10: disclosed