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Debian Bookworm: DSA-5853-1 critical: pam-u2f bypass issue

debian
Calendar Grey January 29, 2025
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Debian's DSA-5853-1 addresses a critical flaw in pam-u2f pre-1.0.0-1 that lets attackers bypass U2F authentication, urging users to upgrade for security.
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...
Topics%20covered

Topics Covered

security advisory DoS authentication bypass pam-u2f U2F bookworm

Summary

For the stable distribution (bookworm), this problem has been fixed in
version 1.1.0-1.1+deb12u1.

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/source-package/pam-u2f

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/



Severity
critical
Lowest
Low
Medium
High
Critical

Package: pam-u2f
CVE ID: CVE-2025-23013

Topics%20covered

Topics Covered

security advisory DoS authentication bypass pam-u2f U2F bookworm

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