CVE-2023-28625

03.04.2023, 14:15

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`.

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	NIST	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
GitHub_M	CNA	7.5 HIGH	NETWORK	LOW	NONE	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE	ADP	---				---
CISA-ADP	ADP	---				---

Base Score

CVSS 3.x

EPSS Score

Percentile: 28%

Vendor	Product	Version
openidc	mod_auth_openidc	2.0.0 ≤ 𝑥 < 2.4.13.2

𝑥

= Vulnerable software versions

Debian Releases

Debian Product

Codename

libapache2-mod-auth-openidc

bullseye	2.4.9.4-0+deb11u4 fixed
bullseye (security)	2.4.9.4-0+deb11u3 fixed
bookworm	2.4.12.3-2+deb12u2 fixed
sid	2.4.16.5-1 fixed
trixie	2.4.16.5-1 fixed

Ubuntu Releases

Ubuntu Product

Codename

libapache2-mod-auth-openidc

oracular	needs-triage
noble	needs-triage
mantic	ignored
lunar	ignored
kinetic	ignored
jammy	needs-triage
focal	needs-triage
bionic	needs-triage
xenial	needs-triage
trusty	ignored

Common Weakness Enumeration

CWE-476 - NULL Pointer Dereference
A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit.

References

https://github.com/OpenIDC/mod_auth_openidc/blame/3f11976dab56af0a46a7dddb7a275cc16d6eb726/src/mod_auth_openidc.c#L178-L179

https://github.com/OpenIDC/mod_auth_openidc/commit/c0e1edac3c4c19988ccdc7713d7aebfce6ff916a

https://github.com/OpenIDC/mod_auth_openidc/releases/tag/v2.4.13.2

https://github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-f5xw-rvfr-24qr

https://lists.debian.org/debian-lts-announce/2023/04/msg00034.html

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WIBKFC22PDH6UXMSZ23PHTD7736ZC7BB/