CVE-2021-3698

Severity: high (CVSS 7.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-03-10 · updated 2026-06-17
Weakness: CWE-295

Description

A flaw was found in Cockpit in versions prior to 260 in the way it handles the certificate verification performed by the System Security Services Daemon (SSSD). This flaw allows client certificates to authenticate successfully, regardless of the Certificate Revocation List (CRL) configuration or the certificate status. The highest threat from this vulnerability is to confidentiality.

Affected products

Cockpit-Project Cockpit: before 260 — fixed in 260
Red Hat Enterprise Linux: 8.0

How to fix

Upgrade to a fixed version: Cockpit-Project Cockpit 260. Check the vendor advisory for mitigations.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1992149
https://bugzilla.redhat.com/show_bug.cgi?id=1992149

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