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Advisory severityMedium4.9Red Hat Linux

Medium [CVE-2025-2487] 389-ds-base: null pointer dereference leads to denial of service

This medium-severity Red Hat Linux advisory covers CVE-2025-2487 affecting Red Hat Directory Server 12.4 EUS for RHEL 9, Red Hat Enterprise Linux 9.4 Extended Update Support, Red Hat Enterprise Linux 6.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2025-2487 Source published Source updated

VulniPulse record published

CVE-2025-2487
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

Summary

A flaw was found in the 389-ds-base LDAP Server. This issue occurs when issuing a Modify DN LDAP operation through the ldap protocol, when the function return value is not tested and a NULL pointer is dereferenced.

If a privileged user performs a ldap MODDN operation after a failed operation, it could lead to a Denial of Service (DoS) or system crash. Red Hat rates this as a Moderate severity since the impact is limited to privileged users who can perform the operations, leading to an impact on server Availability.

This issue is not reproducible in Red Hat Enterprise Linux (RHEL) 10 due to the way the RHEL 10 database write operations are serialized, therefore, it is not affected. 389-ds-base has been fixed in RHEL 9.5.

Hence, it's actually not-affected and fix will be picked after rebase from RHEL-9.5. Weakness: CWE-476.

Affected Red Hat products: Red Hat Directory Server 12.4 EUS for RHEL 9; Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 9.4 Extended Update Support; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8. Will not fix / out of support: Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 8.

Red Hat fixing advisory: RHSA-2025:3670, RHSA-2025:4491, RHSA-2025:7395, RHSA-2025:3663.

Affected products named by the advisory: Red Hat package: 389-ds-base.

Is CVE-2025-2487 exploited?

No exploitation is reported in the sources VulniPulse tracks: CVE-2025-2487 is not in the CISA KEV catalog (checked ) and this advisory does not report exploitation. That is not proof the vulnerability cannot be exploited.

How do I fix CVE-2025-2487?

Upgrade to a fixed release named by Red Hat:

  • redhat-ds:12-9040020250325181857.1674d574
  • 389-ds-base-0:2.5.2-9.el9_5
  • 389-ds-base-0:2.6.1-8.el9_6
  • 389-ds-base-0:2.4.5-14.el9_4
  • RHSA-2025:3670
  • RHSA-2025:4491
  • RHSA-2025:7395
  • RHSA-2025:3663

Confirm against the vendor advisory before you patch.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative. Check it before change work.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Fixed versions
  • redhat-ds:12-9040020250325181857.1674d574
  • 389-ds-base-0:2.5.2-9.el9_5
  • 389-ds-base-0:2.6.1-8.el9_6
  • 389-ds-base-0:2.4.5-14.el9_4
  • RHSA-2025:3670
  • RHSA-2025:4491
  • RHSA-2025:7395
  • RHSA-2025:3663

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Currently, no mitigation is available for this vulnerability.

Official advisory · high-confidence parse· fetched 5 days ago·verify at source

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