Bug 2338106 (CVE-2025-23013)

Summary: CVE-2025-23013 pam-u2f: pam-u2f: Local privilege escalation and authentication bypass
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
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Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in pam-u2f (Pluggable Authentication Module - U2F). This vulnerability allows local privilege escalation and authentication bypass via unprivileged user access, potentially requiring the user's password depending on configuration.
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Bug Depends On: 2338113, 2338114, 2338115    
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Description OSIDB Bzimport 2025-01-15 04:01:17 UTC 
In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product implements a Pluggable Authentication Module (PAM) that can be deployed to support authentication using a YubiKey or other FIDO compliant authenticators on macOS or Linux. This software package has an issue that allows for an authentication bypass in some configurations. An attacker would require the ability to access the system as an unprivileged user. Depending on the configuration, the attacker may also need to know the user's password.