CVE-2026-18651 389-ds-base: 389-ds-base: sasl plain bind installs connection credentials before account-lock check, allowing continued access as a locked account

Description

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, the server installs connection-level bind credentials before performing the account-lock check. If the account is subsequently found to be locked, the bind is reported as failed to the client, but the already-installed authenticated state on the connection is not reverted. A client that supplies valid credentials for an account that has been administratively locked can continue to use the same connection with that account's privileges, defeating account lock as an access-revocation control.

Exploitable à distance par le réseau, avec un compte ordinaire et sans action d’un utilisateur ; l’impact sur les données ou le service reste limité.

Vecteur d’attaque

Réseau

Complexité

Faible

Privilèges requis

Faibles

Interaction

Aucune

Portée

Inchangée

Confidentialité

Faible

Intégrité

Faible

Disponibilité

Aucun

Produits et versions touchés