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CVE-2024-9666

4.7 · MEDIUM

A vulnerability was found in the Keycloak Server.

Published Nov 25, 2024CWE-444EPSS 0.40%

Overview

CVE-2024-9666 is a medium-severity vulnerability. It was published on November 25, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

A vulnerability was found in the Keycloak Server. The Keycloak Server is vulnerable to a denial of service (DoS) attack due to improper handling of proxy headers. When Keycloak is configured to accept incoming proxy headers, it may accept non-IP values, such as obfuscated identifiers, without proper validation. This issue can lead to costly DNS resolution operations, which an attacker could exploit to tie up IO threads and potentially cause a denial of service.

The attacker must have access to send requests to a Keycloak instance that is configured to accept proxy headers, specifically when reverse proxies do not overwrite incoming headers, and Keycloak is configured to trust these headers.

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

Refaccess.redhat.com/errata/RHSA-2024:10175Refaccess.redhat.com/errata/RHSA-2024:10176Refaccess.redhat.com/errata/RHSA-2024:10177Refaccess.redhat.com/errata/RHSA-2024:10178Refaccess.redhat.com/security/cve/CVE-2024-9666Refbugzilla.redhat.com/show_bug.cgi?id=2317440

How CyberStrike helps

Frequently asked questions

What is CVE-2024-9666?

CVE-2024-9666 is a medium-severity vulnerability. It was published on November 25, 2024 and has a CVSS 3.1 base score of 4.7 (MEDIUM).

How severe is CVE-2024-9666?

This vulnerability has a CVSS 3.1 base score of 4.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-9666?

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-2024-9666?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-9666 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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