6.5
MEDIUM
CVE-2019-3875
Keycloak X.509 Authenticator CRL Signature Validation Vulnerability
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.

INFO

Published Date :

June 12, 2019, 2:29 p.m.

Last Modified :

Oct. 9, 2019, 11:49 p.m.

Remotely Exploitable :

Yes !

Impact Score :

2.5

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-3875 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Redhat keycloak
2 Redhat single_sign-on
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-3875.

URL Resource
http://www.securityfocus.com/bid/108748 Third Party Advisory VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875 Issue Tracking Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-3875 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-3875 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Oct. 09, 2019

    Action Type Old Value New Value
    Added CVSS V3 Red Hat, Inc. AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
    Added CWE Red Hat, Inc. CWE-345
    Added CWE Red Hat, Inc. CWE-295
  • Initial Analysis by [email protected]

    Jun. 14, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:M/Au:N/C:P/I:P/A:N)
    Added CVSS V3 AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3875 Issue Tracking, Patch, Vendor Advisory
    Changed Reference Type http://www.securityfocus.com/bid/108748 No Types Assigned http://www.securityfocus.com/bid/108748 Third Party Advisory, VDB Entry
    Added CWE CWE-295
    Added CPE Configuration OR *cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:* versions up to (excluding) 6.0.2 *cpe:2.3:a:redhat:single_sign-on:7.3:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jun. 13, 2019

    Action Type Old Value New Value
    Added Reference http://www.securityfocus.com/bid/108748 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-3875 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.00%

score

0.30638

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability