Denial of service when manipulating mod_auth_openidc_session_chunks cookie in mod_auth_openidc
Summary
Denial of service when manipulating mod_auth_openidc_session_chunks cookie in mod_auth_openidc
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2024-24814 libapache2-mod-auth-openidc Fixed in: 2.4.9.4-0+deb11u4
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- patch github.com
- web lists.debian.org
- web lists.fedoraproject.org