CVE-2024-24814

published 2024-02-13

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…

Priority P3 43 high 7.5 CVSS 3.1

AV N AC L PR N UI N S U C N I N A H

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

5 ranges

Vendor	Product	Version range	Fixed in
debian	debian_linux	—	—
debian	libapache2-mod-auth-openidc	< libapache2-mod-auth-openidc 2.4.12.3-2+deb12u1 (bookworm)	libapache2-mod-auth-openidc 2.4.12.3-2+deb12u1 (bookworm)
fedoraproject	fedora	—	—
openidc	mod_auth_openidc	—	—
openidc	mod_auth_openidc	2.0.0 – 2.4.15.1	—

CVSS provenance

nvd v3.1 7.5 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

osv 7.5 HIGH

vendor_debian 7.5 HIGH

vendor_redhat 7.5 HIGH

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