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openSUSE 15.6: SUSE-SU-2025:01953-1 important: apache2-mod_auth_openidc DoS

opensuse
Calendar Grey June 13, 2025
Scroller Opensuse
SUSE has unveiled a critical patch for apache2-mod_auth_openidc, tackling a significant denial of service vulnerability.
An update that solves one vulnerability can now be installed.

Description

This update for apache2-mod_auth_openidc fixes the following issues:

* CVE-2025-3891: Fixed denial of service via an empty POST request when

OIDCPreservePost is enabled (bsc#1242015).

Topics%20covered

Topics Covered

security advisory denial of service important openSUSE apache2-mod_auth_openidc CVE-2025-3891

Patch

## Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like

YaST online_update or "zypper patch".

Alternatively you can run the command listed for your product:

* Server Applications Module 15-SP6

zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP6-2025-1953=1

* Server Applications Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2025-1953=1

* openSUSE Leap 15.6

zypper in -t patch SUSE-2025-1953=1 openSUSE-SLE-15.6-2025-1953=1

Package List

* Server Applications Module 15-SP6 (aarch64 ppc64le s390x x86_64)

* apache2-mod_auth_openidc-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debugsource-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debuginfo-2.3.8-150600.16.11.1

* Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)

* apache2-mod_auth_openidc-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debugsource-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debuginfo-2.3.8-150600.16.11.1

* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)

* apache2-mod_auth_openidc-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debugsource-2.3.8-150600.16.11.1

* apache2-mod_auth_openidc-debuginfo-2.3.8-150600.16.11.1

References

* bsc#1242015

## References:

* https://www.suse.com/security/cve/CVE-2025-3891.html

* https://bugzilla.suse.com/show_bug.cgi?id=1242015

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2025:01953-1
Release Date: 2025-06-13T13:55:39Z
Affected Products: * openSUSE Leap 15.6 * Server Applications Module 15-SP6 * Server Applications Module 15-SP7 * SUSE Linux Enterprise Real Time 15 SP6 * SUSE Linux Enterprise Real Time 15 SP7 * SUSE Linux Enterprise Server 15 SP6 * SUSE Linux Enterprise Server 15 SP7 * SUSE Linux Enterprise Server for SAP Applications 15 SP6 * SUSE Linux Enterprise Server for SAP Applications 15 SP7

Topics%20covered

Topics Covered

security advisory denial of service important openSUSE apache2-mod_auth_openidc CVE-2025-3891

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