CVE-2023-3758

Sssd: race condition during authorization leads to gpo policies functioning inconsistently

Description

A race condition flaw was found in sssd where the GPO policy is not consistently applied for authenticated users. This may lead to improper authorization issues, granting or denying access to resources inappropriately.

Remediation

Workaround:

  • A mitigation can be applied to the sssd.conf file that would make the occurrence of the race condition more difficult: 1. Increase the GPO cache time out editing the following configuration directive in sssd.conf file: a) ad_gpo_cache_timeout = 3600 Ps.: This value (3600) should make the cache time out in one hour but would make GPO updates propagation from AD server to local machines take longer. [1] https://access.redhat.com/documentation/pt-br/red_hat_enterprise_linux/7/html/windows_integration_guide/sssd-gpo

Category

7.1
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.12%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support
Affected: Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support
Affected: Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2024:1919 vendor advisory
https://access.redhat.com/errata/RHSA-2024:1920 vendor advisory
https://access.redhat.com/errata/RHSA-2024:1921 vendor advisory
https://access.redhat.com/errata/RHSA-2024:1922 vendor advisory
https://access.redhat.com/errata/RHSA-2024:2571 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3270 vendor advisory
https://access.redhat.com/security/cve/CVE-2023-3758 vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2223762 issue tracking
https://github.com/SSSD/sssd/pull/7302
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/RV3HIZI3SURBUQKSOOL3XE64OOBQ2HTK/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XEP62IDS7A55D5UHM6GH7QZ7SQFOAPVF/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XMORAO2BDDA5YX4ZLMXDZ7SM6KU47SY5/

Frequently Asked Questions

What is the severity of CVE-2023-3758?
CVE-2023-3758 has been scored as a high severity vulnerability.
How to fix CVE-2023-3758?
As a workaround for remediating CVE-2023-3758: A mitigation can be applied to the sssd.conf file that would make the occurrence of the race condition more difficult: 1. Increase the GPO cache time out editing the following configuration directive in sssd.conf file: a) ad_gpo_cache_timeout = 3600 Ps.: This value (3600) should make the cache time out in one hour but would make GPO updates propagation from AD server to local machines take longer. [1] https://access.redhat.com/documentation/pt-br/red_hat_enterprise_linux/7/html/windows_integration_guide/sssd-gpo
Is CVE-2023-3758 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-3758 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3758?
CVE-2023-3758 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Red Hat Enterprise Linux 8.8 Extended Update Support, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support, Red Hat Red Hat Enterprise Linux 9.2 Extended Update Support, Red Hat Red Hat Virtualization 4 for Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.