NULL pointer dereference in Openidc Mod Auth
CVE-2023-28625
mod_auth_openidc is an authentication and authorization module for the Apache 2.x HTTP server that implements the OpenID Connect Relying Party functionality. In versions 2.0.0 through 2.4.13.1, when `OIDCStripCookies` is set and a crafted cookie supplied, a NULL pointer dereference would occur, resulting in a segmentation fault. This could be used in a Denial-of-Service attack and thus presents an availability risk. Version 2.4.13.2 contains a patch for this issue. As a workaround, avoid using `OIDCStripCookies`.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.013 (69.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 70th percentile — 69.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.013 · newest: 0.013 · change: -0.000
Affected products
- Openidc Mod Auth — versions >= 2.0.0, < 2.4.13.2
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-f5xw-rvfr-24qr (Third Party Advisory)
- github.com/OpenIDC/mod_auth_openidc/commit/c0e1edac3c4c19988ccdc7713d7aebfce6ff… (Patch)
- github.com/OpenIDC/mod_auth_openidc/blame/3f11976dab56af0a46a7dddb7a275cc16d6eb… (Third Party Advisory)
- github.com/OpenIDC/mod_auth_openidc/releases/tag/v2.4.13.2 (Release Notes)
- lists.debian.org/debian-lts-announce/2023/04/msg00034.html (Third Party Advisory)
- www.debian.org/security/2023/dsa-5405 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Release Notes)
Frequently asked questions
- What is CVE-2023-28625?
- CVE-2023-28625 is a high-severity vulnerability in Openidc Mod Auth, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2023-04-03.
- How severe is CVE-2023-28625?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-28625 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.