Yubico Pam-U2F vulnerabilities

CVE-2025-23013 [HIGH] CWE-394 CVE-2025-23013: In Yubico pam-u2f before 1.3.1, local privilege escalation can sometimes occur. This product impleme 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 conf

CVE-2021-31924 [MEDIUM] CWE-287 CVE-2021-31924: Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the a Yubico pam-u2f before 1.1.1 has a logic issue that, depending on the pam-u2f configuration and the application used, could lead to a local PIN bypass. This issue does not allow user presence (touch) or cryptographic signature verification to be bypassed, so an attacker would still need to physically possess and interact with the YubiKey or another e

CVE-2019-12209 [HIGH] CWE-59 CVE-2019-12209: Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_k Yubico pam-u2f 1.0.7 attempts parsing of the configured authfile (default $HOME/.config/Yubico/u2f_keys) as root (unless openasuser was enabled), and does not properly verify that the path lacks symlinks pointing to other files on the system owned by root. If the debug option is enabled in the PAM configuration, part of the file contents of a symlink t

CVE-2019-12210 [HIGH] CVE-2019-12210: In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_f In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug log file is set using debug_file, that file descriptor is not closed when a new process is spawned. This leads to the file descriptor being inherited into the child process; the child process can then read from and write to it. This can leak sensitive information and also, if written to, b