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Alerts This Week
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Fedora 41: FEDORA-2025-29900cbe83 critical: pam-u2f authentication bypass

fedora
Calendar Grey January 24, 2025
Dist Fedora Esm H88
Fedora 41 security update introduces enhancements for pam-u2f, addressing security flaws related to authentication bypass with essential fixes.
pam-u2f 1.3.1 includes a fix to resolve CVE-2025-23013 (Partial Authentication Bypass)

Summary

The PAM U2F module provides an easy way to integrate the Yubikey (or

other U2F-compliant authenticators) into your existing user

authentication infrastructure.

Update Information:

pam-u2f 1.3.1 includes a fix to resolve CVE-2025-23013 (Partial Authentication Bypass). CVSS score 7.3. 1.3.2 is a fix for a regression that could impact existing use cases.

Topics%20covered

Topics Covered

security advisory Fedora system update high authentication pam-u2f Partial Authentication Bypass

Change Log

* Thu Jan 16 2025 Gary Buhrmaster - 1.3.2-1 - Update to 1.3.2 - resolves rhbz#2338418 1.3.2 fixes a potentially breaking issue with tightened authfile checking with 1.3.1 * Tue Jan 14 2025 Gary Buhrmaster - 1.3.1-1 - Update to 1.3.1 - resolves rhbz#2337634

References


[ 1 ] Bug #2338115 - CVE-2025-23013 pam-u2f: Partial Authentication Bypass in pam-u2f Software Package [fedora-41] https://bugzilla.redhat.com/show_bug.cgi?id=2338115

Update Instructions

This update can be installed with the "dnf" update program. Use su -c 'dnf upgrade --advisory FEDORA-2025-29900cbe83' at the command line. For more information, refer to the dnf documentation available at http://dnf.readthedocs.io/en/latest/command_ref.html#upgrade-command-label

Severity
critical
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Name: pam-u2f
Product: Fedora 41
Version: 1.3.2
Release: 1.fc41
URL: https://github.com/Yubico/pam-u2f
Summary: Implements PAM authentication over U2F

Topics%20covered

Topics Covered

security advisory Fedora system update high authentication pam-u2f Partial Authentication Bypass

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