[SECURITY] [DLA 4155-1] libapache2-mod-auth-openidc security update
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Debian LTS Advisory DLA-4155-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Moritz Schlarb
May 08, 2025 https://wiki.debian.org/LTS
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Package : libapache2-mod-auth-openidc
Version : 2.4.9.4-0+deb11u6
CVE ID : CVE-2025-3891
Debian Bug : 1104484
A vulnerability has been fixed in mod_auth_openidc, an OpenID Certified
authentication and authorization module for the Apache 2.x HTTP server
that implements the OpenID Connect Relying Party functionality.
An unauthenticated attacker can crash the Apache httpd process by sending
a POST request without a Content-Type header when OIDCPreservePost is
enabled in mod_auth_openidc. This leads to denial of service.
A workaround is to disable the OIDCPreservePost directive.
For Debian 11 bullseye, this problem has been fixed in version
2.4.9.4-0+deb11u6.
We recommend that you upgrade your libapache2-mod-auth-openidc packages.
For the detailed security status of libapache2-mod-auth-openidc please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/libapache2-mod-auth-openidc
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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