pam_usb: Thread-unsafe static pointer in log.c causes data race under concurrent PAM authentication
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.7epss 0.1%
probabilidad de explotación
0.1%top 98% de las CVE
explotación observada
noninguna fuente lo reporta
pam_usb provides hardware authentication for Linux using ordinary removable media. Prior to 0.9.1, src/log.c contains a process-wide static pointer that is written on every PAM invocation with the address of a stack-local variable. This violates the PAM re-entrancy requirement and creates a data race when the PAM stack is invoked concurrently from multiple threads. This vulnerability is fixed in 0.9.1.
CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
Productos afectados
mcdope · pam_usb