[USN-7446-1] mod_auth_openidc vulnerability

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Ubuntu Security Notice USN-7446-1
April 23, 2025

libapache2-mod-auth-openidc vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.04
- Ubuntu 24.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

mod_auth_openidc could be made to expose sensitive information over the
network.

Software Description:
- libapache2-mod-auth-openidc: OpenID Connect Relying Party implementation for Apache

Details:

It was discovered that mod_auth_openidc incorrectly handled certain
POST requests. An attacker could possibly use this issue to obtain
sensitive information.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.04
libapache2-mod-auth-openidc 2.4.16.10-1ubuntu1

Ubuntu 24.10
libapache2-mod-auth-openidc 2.4.15.7-2ubuntu0.1

Ubuntu 24.04 LTS
libapache2-mod-auth-openidc 2.4.15.1-1ubuntu0.1

Ubuntu 22.04 LTS
libapache2-mod-auth-openidc 2.4.11-1ubuntu0.1

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7446-1
CVE-2025-31492

Package Information:
https://launchpad.net/ubuntu/+source/libapache2-mod-auth-openidc/2.4.16.10-1ubuntu1
https://launchpad.net/ubuntu/+source/libapache2-mod-auth-openidc/2.4.15.7-2ubuntu0.1
https://launchpad.net/ubuntu/+source/libapache2-mod-auth-openidc/2.4.15.1-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libapache2-mod-auth-openidc/2.4.11-1ubuntu0.1