CVE-2024-24814

mod_auth_openidc is an OpenID Certified™ authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. In affected versions missing input validation on mod_auth_openidc_session_chunks cookie value makes the server vulnerable to a denial of service (DoS) attack. An internal security audit has been conducted and the reviewers found that if they manipulated the value of the mod_auth_openidc_session_chunks cookie to a very large integer, like 99999999, the server struggles with the request for a long time and finally gets back with a 500 error. Making a few requests of this kind caused our server to become unresponsive. Attackers can craft requests that would make the server work very hard (and possibly become unresponsive) and/or crash with minimal effort. This issue has been addressed in version 2.4.15.2. Users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

Almalinux, Centos, Red Hat, Red Os, Rocky Linux, Suse, Mod Auth Openidc

Openidc Mod Auth Openidc

≤ 2.4.15.1

Fix

Available

CVSS 3.1

7.5 HIGH

EPSS

1.3% (67th percentile)

Weakness

CWE-400

NVD status

Modified

Published

2024-02-13

No exploit for CVE-2024-24814 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.