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7.1
HIGH CVSS 3.1
CVE-2023-2422
Keycloak: oauth client impersonation
Description

A flaw was found in Keycloak. A Keycloak server configured to support mTLS authentication for OAuth/OpenID clients does not properly verify the client certificate chain. A client that possesses a proper certificate can authorize itself as any other client, therefore, access data that belongs to other clients.

INFO

Published Date :

Oct. 4, 2023, 11:15 a.m.

Last Modified :

Nov. 21, 2024, 7:58 a.m.

Remotely Exploit :

Yes !

Source :

[email protected]
Affected Products

The following products are affected by CVE-2023-2422 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 enterprise_linux
2 Redhat openshift_container_platform
3 Redhat keycloak
4 Redhat single_sign-on
5 Redhat build_of_keycloak
1 Keycloak keycloak
: Total Affected Vendor : 2 | Products : 6
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 MEDIUM [email protected]
CVSS 3.1 HIGH [email protected]
Solution
A flaw exists in Keycloak where mTLS authentication does not properly verify the client certificate chain.
  • Update the affected Red Hat Single Sign-On package.
  • Follow the guidance provided in the relevant RHSA advisories for your environment.
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-2023-2422.

URL Resource
https://access.redhat.com/errata/RHSA-2023:3883 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3884 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3885 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3888 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3892 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2023-2422 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2191668 Issue Tracking Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3883 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3884 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3885 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3888 Vendor Advisory
https://access.redhat.com/errata/RHSA-2023:3892 Vendor Advisory
https://access.redhat.com/security/cve/CVE-2023-2422 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2191668 Issue Tracking Vendor Advisory
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-2422 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-2422 weaknesses.

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-2023-2422 vulnerability anywhere in the article.

Results are limited to the first 20 news articles due to potential performance issues.

The following table lists the changes that have been made to the CVE-2023-2422 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 af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2023:3883
    Added Reference https://access.redhat.com/errata/RHSA-2023:3884
    Added Reference https://access.redhat.com/errata/RHSA-2023:3885
    Added Reference https://access.redhat.com/errata/RHSA-2023:3888
    Added Reference https://access.redhat.com/errata/RHSA-2023:3892
    Added Reference https://access.redhat.com/security/cve/CVE-2023-2422
    Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=2191668
  • CVE Modified by [email protected]

    May. 14, 2024

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

    Nov. 07, 2023

    Action Type Old Value New Value
    Added CWE Red Hat, Inc. CWE-295
  • Initial Analysis by [email protected]

    Oct. 10, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
    Changed Reference Type https://access.redhat.com/errata/RHSA-2023:3883 No Types Assigned https://access.redhat.com/errata/RHSA-2023:3883 Vendor Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2023:3884 No Types Assigned https://access.redhat.com/errata/RHSA-2023:3884 Vendor Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2023:3885 No Types Assigned https://access.redhat.com/errata/RHSA-2023:3885 Vendor Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2023:3888 No Types Assigned https://access.redhat.com/errata/RHSA-2023:3888 Vendor Advisory
    Changed Reference Type https://access.redhat.com/errata/RHSA-2023:3892 No Types Assigned https://access.redhat.com/errata/RHSA-2023:3892 Vendor Advisory
    Changed Reference Type https://access.redhat.com/security/cve/CVE-2023-2422 No Types Assigned https://access.redhat.com/security/cve/CVE-2023-2422 Vendor Advisory
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=2191668 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=2191668 Issue Tracking, Vendor Advisory
    Added CWE NIST CWE-295
    Added CPE Configuration AND OR *cpe:2.3:a:redhat:keycloak:-:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.9:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.10:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.11:*:*:*:*:*:*:* *cpe:2.3:a:redhat:openshift_container_platform:4.12:*:*:*:*:*:*:* *cpe:2.3:a:redhat:single_sign-on:7.6:*:*:*:*:*:*:* OR cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
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.
Vulnerability Scoring Details
Base CVSS Score: 7.1
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact
Exploit Prediction

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

0.29 }} 0.08%

score

0.52357

percentile