- -------------------------------------------------------------------------
Debian LTS Advisory DLA-4040-1                debian-lts@lists.debian.org
https://www.debian.org/lts/security/               Emilio Pozuelo Monfort
February 03, 2025                             https://wiki.debian.org/LTS
- -------------------------------------------------------------------------

Package        : pam-u2f
Version        : 1.1.0-1.1+deb11u1
CVE ID         : CVE-2025-23013

Matthias Gerstner reported that pam-u2f, a PAM module which allows to
use U2F (Universal 2nd Factor) devices in the PAM authentication stack,
does not properly handle PAM_IGNORE return values, allowing to bypass
the second factor or password-less login without inserting the proper
device.

For Debian 11 bullseye, this problem has been fixed in version
1.1.0-1.1+deb11u1.

We recommend that you upgrade your pam-u2f packages.

For the detailed security status of pam-u2f please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/pam-u2f

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

Debian LTS: DLA-4040-1: pam-u2f Security Advisory Updates

February 3, 2025
Matthias Gerstner reported that pam-u2f, a PAM module which allows to use U2F (Universal 2nd Factor) devices in the PAM authentication stack, does not properly handle PAM_IGNORE re...

Summary

For Debian 11 bullseye, this problem has been fixed in version
1.1.0-1.1+deb11u1.

We recommend that you upgrade your pam-u2f packages.

For the detailed security status of pam-u2f please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/pam-u2f

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


Severity
Package : pam-u2f
Version : 1.1.0-1.1+deb11u1
CVE ID : CVE-2025-23013

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