Security update for pam_u2f

Announcement ID: SUSE-SU-2025:20132-1
Release Date: 2025-03-04T08:28:30Z
Rating: moderate
References:
Cross-References:
CVSS scores:
  • CVE-2025-23013 ( SUSE ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • CVE-2025-23013 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  • CVE-2025-23013 ( NVD ): 7.3 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Affected Products:
  • SUSE Linux Micro 6.0

An update that solves one vulnerability can now be installed.

Description:

This update for pam_u2f fixes the following issues:

  • update to 1.3.2:

  • Relax authfile permission check to a warning instead of an error to prevent a breaking change locking existing users out of their systems.

  • update to 1.3.1:

  • CVE-2025-23013: Fixed problematic PAM_IGNORE return values in pam_sm_authenticate()(bsc#1233517).
  • Changed return value when nouserok is enabled and the user has no credentials, PAM_IGNORE is used instead of PAM_SUCCESS.
  • Hardened checks of authfile permissions.
  • Hardened checks for nouserok.
  • Improved debug messages.
  • Improved documentation.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Micro 6.0
    zypper in -t patch SUSE-SLE-Micro-6.0-221=1

Package List:

  • SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    • pam_u2f-debugsource-1.3.2-1.1
    • pam_u2f-1.3.2-1.1
    • pam_u2f-debuginfo-1.3.2-1.1

References: