CVE-2019-3875

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.

Category

6.5
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.05%
Vendor Advisory redhat.com
Affected: Red Hat keycloak
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875 issue tracking patch vendor advisory
http://www.securityfocus.com/bid/108748 vdb entry third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-3875?
CVE-2019-3875 has been scored as a medium severity vulnerability.
How to fix CVE-2019-3875?
To fix CVE-2019-3875, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-3875 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-3875 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-2019-3875?
CVE-2019-3875 affects Red Hat keycloak.
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