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CVE-2024-23647

6.5 · MEDIUM

Authentik is an open-source Identity Provider.

Published Jan 30, 2024CWE-287EPSS 0.54%

Overview

CVE-2024-23647 is a medium-severity vulnerability. It was published on January 30, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

Authentik is an open-source Identity Provider. There is a bug in our implementation of PKCE that allows an attacker to circumvent the protection that PKCE offers. PKCE adds the code_challenge parameter to the authorization request and adds the code_verifier parameter to the token request. Prior to 2023.8.7 and 2023.10.7, a downgrade scenario is possible: if the attacker removes the code_challenge parameter from the authorization request, authentik will not do the PKCE check. Because of this bug, an attacker can circumvent the protection PKCE offers, such as CSRF attacks and code injection attacks. Versions 2023.8.7 and 2023.10.7 fix the issue.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/goauthentik/authentik/commit/38e04ae12720e5d81b4f7ac77997eb8d1275d31aGitHubgithub.com/goauthentik/authentik/security/advisories/GHSA-mrx3-gxjx-hjqjGitHubgithub.com/goauthentik/authentik/commit/38e04ae12720e5d81b4f7ac77997eb8d1275d31aGitHubgithub.com/goauthentik/authentik/security/advisories/GHSA-mrx3-gxjx-hjqj

How CyberStrike helps

Frequently asked questions

What is CVE-2024-23647?

CVE-2024-23647 is a medium-severity vulnerability. It was published on January 30, 2024 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2024-23647?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-23647?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2024-23647?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-23647 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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