389-ds:1.4 security, bug fix, and enhancement update

1.4.3.39-28 - Bump version to 1.4.3.39-28 - Resolves: RHEL-222326 - EMBARGOED CVE-2026-18453 389-ds:1.4/389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USEONEBACKEND control in opsharedsearch rhel-8.10.z - Resolves: RHEL-220511 - EMBARGOED CVE-2026-1835...

RLSA-2026:64785 Critical: 389-ds-base security, bug fix, and enhancement update

389 Directory Server is an LDAP version 3 LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol LDAP server and command-line utilities for server administration. Security Fixes: 389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length...

RLSA-2026:64791 Critical: 389-ds:1.4 security, bug fix, and enhancement update

389 Directory Server is an LDAP version 3 LDAPv3 compliant server. The base packages include the Lightweight Directory Access Protocol LDAP server and command-line utilities for server administration. Security Fixes: 389-ds-base: 389-ds-base: heap buffer overflow via SASL wrapped-record length...

SUSE CVE-2026-18355

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Directory Server 389-ds-base. In sasliostartpacket, the wrapped-record length read from the wire is validated only against an upper bound. A small wire length 0, 1, or 2 produces an encryptedbuffercount below the already-consumed...

SUSE CVE-2026-18453

A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of opsharedsearch allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USEONEBACKEND control, resulting in denial of servic...

SUSE CVE-2026-18922

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes...

CVE-2026-18355

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Dir...

CVE-2026-18922

A flaw was found in 389 Directory Server. During SASL PLAIN authentica...

UBUNTU-CVE-2026-76560

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule eva...

Amazon Linux 2 : 389-ds-base (ALAS-2026-3909)

The version of 389-ds-base installed on the remote host is prior to 1.3.10.2-17. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2026-3909 advisory. A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL...

UBUNTU-CVE-2026-18355

A heap buffer overflow flaw was found in the SASL I/O layer of 389 Dir...

CVE-2026-76560

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule eva...

CVE-2026-18453

A flaw was found in 389 Directory Server. A missing NULL pointer check...

UBUNTU-CVE-2026-18453

A flaw was found in 389 Directory Server. A missing NULL pointer check...

UBUNTU-CVE-2026-18922

A flaw was found in 389 Directory Server. During SASL PLAIN authentica...

FreeIPA Flaw Chain Lets Anonymous Clients Create Reusable Administrator Credentials

A flaw in FreeIPA lets a client that has never logged in create a Kerberos identity of its own choosing in the directory and end up in the administrators group, Red Hat says. FreeIPA is the system that determines who may log in across a Linux domain and maintains all identities in a 389 Directory...

389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated...

389-ds-base: 389-ds-base: SASL PLAIN authentication allows privilege escalation to Directory Manager via stale identity in Cyrus SASL auxiliary property

A flaw was found in 389 Directory Server. During SASL PLAIN authentication, a stale identity carried in a Cyrus SASL auxiliary property from a prior failed bind attempt can be installed on a connection following a subsequent, unrelated successful bind, regardless of which SASL mechanism completes...

389-ds-base: 389-ds-base: pre-authentication NULL pointer dereference via paged results and USE_ONE_BACKEND control in op_shared_search

A flaw was found in 389 Directory Server. A missing NULL pointer check in the paged results handling of opsharedsearch allows an unauthenticated remote attacker to crash the LDAP server by sending a crafted sequence of search requests using the USEONEBACKEND control, resulting in denial of servic...

389-ds-base: 389-ds: anonymous LDAP client can defeat SELFDN ACI bind-rule checks via empty bind DN

A flaw was found in 389 Directory Server. The SELFDN ACI bind-rule evaluator incorrectly matches an anonymous LDAP client's empty bind DN against an empty stored attribute value, allowing an unauthenticated client to satisfy access control checks intended to require a matching authenticated...