NULL Pointer Dereference Affecting 389-ds-base package, versions <0:1.3.10.2-17.amzn2.0.12


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.85% (56th percentile)

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  • Snyk IDSNYK-AMZN2-389DSBASE-20244862
  • published29 Sept 2026
  • disclosed7 Sept 2026

Introduced: 7 Sep 2026

CVE-2026-18453  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 389-ds-base to version 0:1.3.10.2-17.amzn2.0.12 or higher.
This issue was patched in ALAS2-2026-3957.

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. A missing NULL pointer check in the paged results handling of op_shared_search allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USE_ONE_BACKEND control, resulting in denial of service.

CVSS Base Scores

version 3.1