Information Disclosure and Denial of Service Vulnerability in Yubico PAM Module

CVE-2018-9275 · MEDIUM Severity

AV:N/AC:L/AU:N/C:P/I:N/A:P

In check_user_token in util.c in the Yubico PAM module (aka pam_yubico) 2.18 through 2.25, successful logins can leak file descriptors to the auth mapping file, which can lead to information disclosure (serial number of a device) and/or DoS (reaching the maximum number of file descriptors).

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