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CVE-2025-3891

HIGH

7.5

Description

A flaw was found in the mod_auth_openidc module for Apache httpd. This flaw allows a remote, unauthenticated attacker to trigger a denial of service by sending an empty POST request when the OIDCPreservePost directive is enabled. The server crashes consistently, affecting availability.

CVE Details

CVSS v3.1 Score7.5

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published4/29/2025

Last Modified7/28/2025

Sourcenvd

Honeypot Sightings0

Affected Products

apache:http_serverdebian:debian_linuxredhat:enterprise_linux

Weaknesses (CWE)

CWE-248

References

https://access.redhat.com/errata/RHSA-2025:10002(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10003(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10004(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10006(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10007(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10008(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:10010(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:4597(secalert@redhat.com)

https://access.redhat.com/errata/RHSA-2025:9396(secalert@redhat.com)

https://access.redhat.com/security/cve/CVE-2025-3891(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2361633(secalert@redhat.com)

https://github.com/OpenIDC/mod_auth_openidc/commit/6a0b5f66c87184dfe0e4400f6bdd46a82dc0ec2b(secalert@redhat.com)

https://github.com/OpenIDC/mod_auth_openidc/security/advisories/GHSA-x7cf-8wgv-5j86(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2025/05/msg00007.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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