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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-11610

389-ds-base: 389-ds-base: heap buffer overflow in sasl_io_recv() via padded sasl unbind

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Status
Published
Published
Updated
Assigning organization
redhat

Description

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server (389-ds-base). After a successful SASL bind with integrity protection (SSF > 0), an authenticated attacker can send a specially crafted oversized LDAP UNBIND packet that is copied into a 512-byte heap receive buffer without a bounds check in sasl_io_recv() in sasl_io.c. This allows up to approximately 2 megabytes of attacker-controlled data to overflow the buffer, causing a denial of service (server crash). In FreeIPA and Red Hat Identity Management deployments, any domain user with a valid Kerberos ticket, any enrolled host, or any service account can trigger this vulnerability over the network after authenticating via GSSAPI. The vulnerable code path has existed since approximately 2013 (389-ds-base 1.3.2) and was not addressed by the CVE-2025-14905 fix, which patched a separate heap overflow in schema.c only.

Affected products

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

389ds 389-ds-base

Default version status: unaffected

  • 1.3.2 to ≤ 3.3.0affected

Red Hat Red Hat Directory Server 11.5 E4S for RHEL 8

Default version status: affected

  • 8060020260702180044.0ca98e7e to < *unaffected

Red Hat Red Hat Directory Server 11.7 E4S for RHEL 8

Default version status: affected

  • 8080020260702180836.f969626e to < *unaffected

Red Hat Red Hat Directory Server 11.9 for RHEL 8

Default version status: affected

  • 8100020260702145313.37ed7c03 to < *unaffected

Red Hat Red Hat Directory Server 12.2 E4S for RHEL 9

Default version status: affected

  • 9020020260703060155.1674d574 to < *unaffected

Red Hat Red Hat Directory Server 12.4 E4S for RHEL 9

Default version status: affected

  • 9040020260703055735.1674d574 to < *unaffected

Red Hat Red Hat Enterprise Linux 10

Default version status: affected

  • 0:3.2.0-8.el10_2 to < *unaffected

Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support

Default version status: affected

  • 0:3.0.6-19.el10_0 to < *unaffected

Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support

Default version status: affected

  • 0:1.3.11.1-13.el7_9 to < *unaffected

Red Hat Red Hat Enterprise Linux 8

Default version status: affected

  • 8100020260626120929.25e700aa to < *unaffected

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

Default version status: affected

  • 8040020260629123121.96015a92 to < *unaffected

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

Default version status: affected

  • 8040020260629123121.96015a92 to < *unaffected

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

Default version status: affected

  • 8060020260626130540.824efc52 to < *unaffected

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

Default version status: affected

  • 8060020260626130540.824efc52 to < *unaffected

Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service

Default version status: affected

  • 8080020260630025241.6dbb3803 to < *unaffected

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

Default version status: affected

  • 8080020260630025241.6dbb3803 to < *unaffected

Red Hat Red Hat Enterprise Linux 9

Default version status: affected

  • 0:2.8.0-8.el9_8 to < *unaffected

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

Default version status: affected

  • 0:2.2.4-19.el9_2 to < *unaffected

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

Default version status: affected

  • 0:2.4.5-26.el9_4 to < *unaffected

Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support

Default version status: affected

  • 0:2.6.1-22.el9_6 to < *unaffected

Red Hat Red Hat Directory Server 13.2

Default version status: affected

  • 1783452100 to < *unaffected

Red Hat Red Hat Directory Server 12

Default version status: affected

Red Hat Red Hat Directory Server 13

Default version status: unaffected

Red Hat Red Hat Enterprise Linux 6

Default version status: affected

References