VULNERABILITY INTELLIGENCE

CVE-2019-3875

CVSS score6.5 MEDIUM

EPSS probability0.29%

CISA KEVNot currently listed

Published2019-06-12

Last modified2026-06-17

CVSS vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

Description

A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.

Weakness classification

CWE-295: Improper Certificate Validation
CWE-345: Insufficient Verification of Data Authenticity

Primary references

secalert@redhat.com — Third Party Advisory, VDB Entry
secalert@redhat.com — Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108 — Issue Tracking, Patch, Vendor Advisory