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CVE-2026-18453

389-ds-base: 389-ds-base: pre-authentication null pointer dereference via paged results and use_one_backend control in op_shared_search PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
Red Hat / Red Hat Directory Server 11.5 E4S for RHEL 8unaffected 8060020260908152739.0ca98e7e before *
Red Hat / Red Hat Directory Server 11.7 E4S for RHEL 8unaffected 8080020260903102346.f969626e before *
Red Hat / Red Hat Directory Server 11.9 for RHEL 8unaffected 8100020260904171440.37ed7c03 before *
Red Hat / Red Hat Directory Server 12.2 E4S for RHEL 9unaffected 9020020260903155914.1674d574 before *
Red Hat / Red Hat Directory Server 12.4 E4S for RHEL 9unaffected 9040020260903102623.1674d574 before *
Red Hat / Red Hat Enterprise Linux 10unaffected 0:3.2.0-10.el10_2 before *
Red Hat / Red Hat Enterprise Linux 10.0 Extended Update Supportunaffected 0:3.0.6-21.el10_0 before *
Red Hat / Red Hat Enterprise Linux 7 Extended Lifecycle Supportunaffected 0:1.3.11.1-15.el7_9 before *
Red Hat / Red Hat Enterprise Linux 8unaffected 8100020260904155442.25e700aa before *
Red Hat / Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Supportunaffected 8040020260901171549.96015a92 before *
Red Hat / Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-Onunaffected 8040020260901171549.96015a92 before *
Red Hat / Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Supportunaffected 8060020260901145727.824efc52 before *
Red Hat / Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-Onunaffected 8060020260901145727.824efc52 before *
Red Hat / Red Hat Enterprise Linux 8.8 Telecommunications Update Serviceunaffected 8080020260831180218.6dbb3803 before *
Red Hat / Red Hat Enterprise Linux 8.8 Update Services for SAP Solutionsunaffected 8080020260831180218.6dbb3803 before *
Red Hat / Red Hat Enterprise Linux 9unaffected 0:2.8.0-10.el9_8 before *
Red Hat / Red Hat Enterprise Linux 9.2 Update Services for SAP Solutionsunaffected 0:2.2.4-22.el9_2 before *
Red Hat / Red Hat Enterprise Linux 9.4 Update Services for SAP Solutionsunaffected 0:2.4.5-29.el9_4 before *
Red Hat / Red Hat Enterprise Linux 9.6 Extended Update Supportunaffected 0:2.6.1-24.el9_6 before *
Red Hat / Red Hat Directory Server 13.2unaffected 1788851765 before *
Red Hat / Red Hat Directory Server 12affected
Red Hat / Red Hat Directory Server 13unaffected
Red Hat / Red Hat Enterprise Linux 6unknown

CWE

CWE-476

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.