Improper Authentication Affecting 389-ds-base package, versions <0:1.3.10.2-17.amzn2.0.9


Severity

Recommended
0.0
critical
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.56% (45th percentile)

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  • Snyk IDSNYK-AMZN2-389DSBASE-19651675
  • published9 Sept 2026
  • disclosed7 Sept 2026

Introduced: 7 Sep 2026

NewCVE-2026-18922  (opens in a new tab)
CWE-287  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 389-ds-base to version 0:1.3.10.2-17.amzn2.0.9 or higher.
This issue was patched in ALAS2-2026-3909.

NVD Description

Note: Versions mentioned in the description apply only to the upstream 389-ds-base package and not the 389-ds-base package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes that second bind. An attacker can send a SASL PLAIN bind as cn=Directory Manager with an incorrect password, then complete a SASL ANONYMOUS bind on the same connection, causing the server to grant Directory Manager authority without any valid credentials. A variant using a valid low-privileged account's own successful bind instead of an anonymous one is also possible.

CVSS Base Scores

version 3.1