# Security update for apache2-mod_auth_openidc

Announcement ID: SUSE-SU-2025:01953-1  
Release Date: 2025-06-13T13:55:39Z  
Rating: important  
References:

  * bsc#1242015

  
Cross-References:

  * CVE-2025-3891

  
CVSS scores:

  * CVE-2025-3891 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-3891 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-3891 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-3891 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
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

  
  
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).

## 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:

  * https://www.suse.com/security/cve/CVE-2025-3891.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1242015