Vulnerability Description
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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openidc | Mod Auth Openidc | >= 2.0.0, <= 2.4.15.1 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 39 |
Related Weaknesses (CWE)
References
- https://github.com/OpenIDC/mod_auth_openidc/commit/4022c12f314bd89d127d1be008b1aPatch
- https://github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-hxr6-w4gc-7ExploitVendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00004.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
- https://github.com/OpenIDC/mod_auth_openidc/commit/4022c12f314bd89d127d1be008b1aPatch
- https://github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-hxr6-w4gc-7ExploitVendor Advisory
- https://lists.debian.org/debian-lts-announce/2024/03/msg00004.htmlMailing ListThird Party Advisory
- https://lists.fedoraproject.org/archives/list/[email protected]Mailing ListThird Party Advisory
FAQ
What is CVE-2024-24814?
CVE-2024-24814 is a vulnerability with a CVSS score of 7.5 (HIGH). 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 mis...
How severe is CVE-2024-24814?
CVE-2024-24814 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2024-24814?
Check the references section above for vendor advisories and patch information. Affected products include: Openidc Mod Auth Openidc, Debian Debian Linux, Fedoraproject Fedora.