SUSE update for pam_u2f

1) Improper Authentication

EUVDB-ID: #VU102855

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2025-23013

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local user to bypass authentication process.

The vulnerability exists due to an error when processing authentication requests. A local user can bypass authentication process and gain unauthorized access to the application.

Mitigation

Update the affected package pam_u2f to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Server 12 SP5 LTSS Extended: Security

SUSE Linux Enterprise Server 12 SP5: LTSS

SUSE Linux Enterprise Server for SAP Applications 12: SP5

SUSE Linux Enterprise Server 12: SP5

SUSE Linux Enterprise High Performance Computing 12: SP5

pam_u2f-debuginfo: before 1.0.8-3.6.1

pam_u2f-debugsource: before 1.0.8-3.6.1

pam_u2f: before 1.0.8-3.6.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp5_ltss_extended:Security:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12_sp5:LTSS:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_for_sap_applications_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_server_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_high_performance_computing_12:SP5:*:*:*:*:*:*:*
• cpe:2.3:o:suse:pam_u2f-debuginfo:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:pam_u2f-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:o:suse:pam_u2f:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2025/suse-su-20250198-1/

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.