Published: 04/04/2018 Updated: 21/05/2018

CVSS v2 Base Score: 6.4 | Impact Score: 4.9 | Exploitability Score: 10

CVSS v3 Base Score: 8.2 | Impact Score: 4.2 | Exploitability Score: 3.9

VMScore: 570

Vector: 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 up to and including 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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yubico yubico pam

Debian Bug report logs - #896491 yubico-pam: CVE-2018-9275: Authfile Leaking File Descriptor Package: src:yubico-pam; Maintainer for src:yubico-pam is Debian Authentication Maintainers <pkg-auth-maintainers@listsaliothdebianorg>; Reported by: Salvatore Bonaccorso <carnil@debianorg> Date: Sat, 21 Apr 2018 17:21:02 ...

CWE-200 https://github.com/Yubico/yubico-pam/issues/136 https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba https://bugzilla.opensuse.org/show_bug.cgi?id=1088027 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=896491 https://nvd.nist.gov

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CVE-2018-9275

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