Description
A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.
Published: 2026-10-06
Score: 5.5 Medium
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

Vendor Workaround

If SSSD automount integration is not required, disable the SSSD autofs responder so that unprivileged local users cannot issue autofs requests against it: systemctl --now mask sssd-autofs.socket sssd-autofs.service If the autofs responder is enabled through the `services` line in the `[sssd]` section of /etc/sssd/sssd.conf, remove `autofs` from that line and restart SSSD with `systemctl restart sssd`. Caveats: disabling the autofs responder means SSSD will no longer serve automount maps to the automount daemon, and restarting SSSD briefly interrupts active identity lookups and automount operations. Where disabling the responder is not possible, restricting access to the autofs responder socket (for example via socket permissions or limiting which local UIDs may connect) so that only the intended trusted clients can reach it also reduces exposure before a fix is available.

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History

Tue, 06 Oct 2026 21:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat openshift Container Platform
Sssd
Sssd sssd
Vendors & Products Redhat openshift Container Platform
Sssd
Sssd sssd

Tue, 06 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 06 Oct 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Moderate


Tue, 06 Oct 2026 00:45:00 +0000

Type Values Removed Values Added
Description A flaw was found in SSSD. An unprivileged local user can repeatedly request master automount map updates through the autofs responder due to missing authorization checks. This triggers global cache invalidation and forces repeated lookups to backend directory providers, leading to a Denial of Service (DoS) from degraded automount availability and elevated resource consumption.
Title Sssd: sssd: denial of service via unprivileged autofs cache invalidation
First Time appeared Redhat
Redhat enterprise Linux
Redhat openshift
Weaknesses CWE-408
CPEs cpe:/a:redhat:openshift:4
cpe:/o:redhat:enterprise_linux:10
cpe:/o:redhat:enterprise_linux:6
cpe:/o:redhat:enterprise_linux:7
cpe:/o:redhat:enterprise_linux:8
cpe:/o:redhat:enterprise_linux:9
Vendors & Products Redhat
Redhat enterprise Linux
Redhat openshift
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}


Subscriptions

Redhat Enterprise Linux Openshift Openshift Container Platform
Sssd Sssd
cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2026-10-16T10:57:28.262Z

Reserved: 2026-10-01T17:20:46.954Z

Link: CVE-2026-104032

cve-icon Vulnrichment

Updated: 2026-10-06T13:34:03.580Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-06T01:16:33.997

Modified: 2026-10-06T15:09:20.387

Link: CVE-2026-104032

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-10-05T23:24:48Z

Links: CVE-2026-104032 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-10-06T20:56:30Z

Weaknesses
  • CWE-408

    Incorrect Behavior Order: Early Amplification