CVE-2019-3875

MEDIUM
6.5
CVSS Score
Published: June 12, 2019 at 01:51 PM UTC
Updated: June 17, 2026 at 02:35 AM UTC
2 products affected across 2 vendorsSingle Sign onKeycloak

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 6.0.26.0.2
Affected range stops below 6.0.2, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (2)

VDB Entryx_refsource_BIDThird Party Advisory
http://www.securityfocus.com/bid/108748
x_refsource_CONFIRMIssue TrackingPatchVendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875

CVSS

6.5MEDIUMredhat
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-295CWE-345

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