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OpenAdvisories

Description

A flaw was found in SSSD. When configured to evaluate password expiration warnings before restrictive access rules in LDAP (Lightweight Directory Access Protocol) environments, an expired-password warning terminates rule evaluation early and treats the access request as successful. A remote authenticated user with an expired password using an alternative authentication method, such as SSH public key authentication, can exploit this flaw to bypass access control restrictions and gain unauthorized access to protected systems.

Affected products

VendorProductAffectedFixed
Red Hat Red Hat Enterprise Linux 10 — —
Red Hat Red Hat Enterprise Linux 6 — —
Red Hat Red Hat Enterprise Linux 7 — —
Red Hat Red Hat Enterprise Linux 8 — —
Red Hat Red Hat Enterprise Linux 9 — —
Red Hat Red Hat OpenShift Container Platform 4 — —
Red Hat Red Hat OpenShift Container Platform 5 — —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 sssd No fix yet —
Debian 13 sssd No fix yet —
Debian 12 sssd No fix yet —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 sssd No fix yet —
Ubuntu 26.04 LTS sssd No fix yet —
Ubuntu 24.04 LTS sssd No fix yet —
Ubuntu 22.04 LTS sssd No fix yet —
Show 3 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS sssd No fix yet —
Ubuntu Pro 18.04 LTS sssd No fix yet —
Ubuntu Pro 16.04 LTS sssd No fix yet —
ReleasePackageFixed inAdvisory
SLES 15 SP6 sssd 2.10.2-150600.3.58.1 SUSE-SU-2026:5079-1
Show 1 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
SLES for SAP 15 SP6 sssd 2.10.2-150600.3.58.1 SUSE-SU-2026:5079-1

Amazon Linux

ReleasePackageFixed inAdvisory
Amazon Linux 2023 sssd +32 2.9.4-1.amzn2023.0.5 ALAS2023-2026-3416

Advisories 2

References