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8.8 High

CVE-2025-11561 Sssd: sssd default kerberos configuration allows privilege escalation on ad-joined linux systems

Description

A flaw was found in the integration of Active Directory and the System Security Services Daemon (SSSD) on Linux systems. In default configurations, the Kerberos local authentication plugin (sssd_krb5_localauth_plugin) is enabled, but a fallback to the an2ln plugin is possible. This fallback allows an attacker with permission to modify certain AD attributes (such as userPrincipalName or samAccountName) to impersonate privileged users, potentially resulting in unauthorized access or privilege escalation on domain-joined Linux hosts.

CVSS 3.1 detail

Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploitable remotely over the network, with an ordinary account and without any user action; an attacker can seriously compromise confidentiality, integrity or availability.

Attack vector
Network
Attack complexity
Low
Privileges required
Low
Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Affected products and versions

Product Affected versions Fixed in
Red Hat Enterprise Linux 10 Versions not published
Red Hat Enterprise Linux 7 Extended Lifecycle Support Versions not published
Red Hat Enterprise Linux 8 Versions not published
Red Hat Enterprise Linux 8.2 Advanced Update Support Versions not published
Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Versions not published
Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Versions not published
Red Hat Enterprise Linux 8.6 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions Versions not published
Show the 20 other branches
Product Affected versions Fixed in
Red Hat Enterprise Linux 8.8 Telecommunications Update Service Versions not published
Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9 Versions not published
Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Versions not published
Red Hat Enterprise Linux 9.4 Extended Update Support Versions not published
Red Hat Enterprise Linux 9.6 Extended Update Support Versions not published
Red Hat OpenShift Container Platform 4.14 414.92 earliest → < 414.92.202511122212-0 414.92.202511122212-0
Red Hat OpenShift Container Platform 4.16 416.94 earliest → < 416.94.202512030118-0 416.94.202512030118-0
Red Hat OpenShift Container Platform 4.17 417.94 earliest → < 417.94.202511260612-0 417.94.202511260612-0
Red Hat OpenShift Container Platform 4.18 418.94 earliest → < 418.94.202511170715-0 418.94.202511170715-0
Red Hat OpenShift Container Platform 4.19 4.19 earliest → < 4.19.9.6.202511252219-0 4.19.9.6.202511252219-0
Red Hat OpenShift Container Platform 4.20 4.20 earliest → < 4.20.9.6.202511252309-0 4.20.9.6.202511252309-0
Red Hat Ceph Storage 7 7 earliest → < 7 7
Red Hat Ceph Storage 8 8 earliest → < 8 8
Red Hat Enterprise Linux 6 Versions not published
Red Hat OpenShift Container Platform 4.15 415.92 earliest → < 415.92.202512100122-0 415.92.202512100122-0
Red Hat OpenShift Container Platform 4.12 412.86 earliest → < 412.86.202601061735-0 412.86.202601061735-0
Red Hat OpenShift Container Platform 4.13 413.92 earliest → < 413.92.202601130113-0 413.92.202601130113-0
Red Hat OpenShift Container Platform 4 Versions not published

References

Timeline

  1. Published
  2. Last modified

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