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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-9064

389-ds-base: 389-ds-base: unbounded ldap controls count in get_ldapmessage_controls_ext() causes cpu and heap amplification (remote dos)

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Status
Published
Published
Updated
Assigning organization
redhat

Description

A flaw was found in 389-ds-base. The get_ldapmessage_controls_ext() function in the LDAP server does not enforce an upper bound on the number of controls per LDAP message. A remote, unauthenticated attacker can send a specially crafted LDAP request containing hundreds of thousands of minimal controls within the default maximum BER message size (2 MB), causing excessive CPU consumption and heap allocation on the server. Under concurrent exploitation, this leads to significant latency degradation, worker thread starvation, or out-of-memory termination, resulting in a denial of service.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

389-ds-base

  • 0affected

Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

Default version status: affected

  • 8060020260609102432.0ca98e7e to < *unaffected

Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8

Default version status: affected

  • 8080020260610130252.f969626e to < *unaffected

Red Hat Red Hat Directory Server 11.9 for RHEL 8

Default version status: affected

  • 8100020260601104139.37ed7c03 to < *unaffected

Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9

Default version status: affected

  • 9020020260615123354.1674d574 to < *unaffected

Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9

Default version status: affected

  • 9040020260611130021.1674d574 to < *unaffected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:3.2.0-7.el10_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Default version status: affected

  • 0:3.0.6-18.el10_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

Default version status: affected

  • 0:1.3.11.1-12.el7_9 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020260601102239.25e700aa to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support

Default version status: affected

  • 8040020260609102422.96015a92 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On

Default version status: affected

  • 8040020260609102422.96015a92 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support

Default version status: affected

  • 8060020260609102416.824efc52 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On

Default version status: affected

  • 8060020260609102416.824efc52 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 8080020260610125847.6dbb3803 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions

Default version status: affected

  • 8080020260610125847.6dbb3803 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:2.8.0-7.el9_8 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions

Default version status: affected

  • 0:2.2.4-18.el9_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions

Default version status: affected

  • 0:2.4.5-25.el9_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:2.6.1-21.el9_6 to < *unaffected

Red Hat Red Hat Directory Server 13.2

Default version status: affected

  • 1781714123 to < *unaffected

Red Hat Red Hat Directory Server 12

Default version status: affected

Red Hat Red Hat Directory Server 13

Default version status: affected

Red Hat Red Hat Enterprise Linux 6

Default version status: unknown

References