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segfault DoS when OIDCStripCookies is set

Moderate
zandbelt published GHSA-f5xw-rvfr-24qr Apr 3, 2023

Package

mod_auth_openidc

Affected versions

>=2.0.0 <=2.4.13.1

Patched versions

>= 2.4.13.2

Description

Impact

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.

Patches

Upgrade to a version >= 2.4.13.2. The patch is recorded here:
https://github.com/OpenIDC/mod_auth_openidc/blame/3f11976dab56af0a46a7dddb7a275cc16d6eb726/src/mod_auth_openidc.c#L178-L179

Workarounds

Avoid using OIDCStripCookies.

Severity

Moderate
5.3
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

CVE ID

CVE-2023-28625

Weaknesses

No CWEs

Credits