Is CVE-2023-28625 in the CISA KEV catalog?

No. CVE-2023-28625 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-28625?

CVE-2023-28625 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2023-28625?

CVE-2023-28625 has an EPSS score of 1.33% (68th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-28625?

Upgrade libapache2-mod-auth-openidc on debian 11 to 2.4.9.4-0+deb11u3 or later. Fixes are available for 15 affected products.

CVE & CISA-KEV Catalog

CVE-2023-28625

HIGH

7.5

CVSS v3

NVD

Description

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`.

CWE-476NULL Pointer Dereference

How to fix

Remediation Available

libapache2-mod-auth-openidcDebian

Fixed in:2.4.9.4-0+deb11u3CVE-2023-28625

Fixed in:2.4.12.3-2CVE-2023-28625

cjoseRocky

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.src::mod_auth_openidc:2.3RHSA-2023:6940

cjoseRed Hat / RHEL

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.src::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

cjose-debuginfoRocky

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

cjose-debuginfoRed Hat / RHEL

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

cjose-debugsourceRocky

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

cjose-debugsourceRed Hat / RHEL

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

cjose-develRocky

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

cjose-develRed Hat / RHEL

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:0.6.1-4.module+el8.9.0+19469+5b493da9.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

mod_auth_openidcRocky

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.src::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

mod_auth_openidcRed Hat / RHEL

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.src::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

mod_auth_openidc-debuginfoRocky

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

mod_auth_openidc-debuginfoRed Hat / RHEL

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

mod_auth_openidc-debugsourceRocky

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

mod_auth_openidc-debugsourceRed Hat / RHEL

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.s390x::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.x86_64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.aarch64::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-5.module+el8.9.0+18723+672ccf5d.ppc64le::mod_auth_openidc:2.3RHSA-2023:6940

Fixed in:0:2.4.9.4-4.el9RHSA-2023:6365

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

1.33%probability of exploitation in 30 days

68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory4

Release Notes2

Related Vulnerabilities

Other CWE-476 (NULL Pointer Dereference) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-21758	High	7.5	92%	-	Fix
CVE-2023-21547	High	7.5	88%	-	Fix
CVE-2014-3470	Medium	4.3	86%	-	Fix
CVE-2021-44224	High	8.2	82%	-	Fix
CVE-2016-0742	High	7.5	82%	-	Fix
CVE-2009-1386	Medium	5.0	80%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-04-10.