CVE-2018-9275

Severity: high (CVSS 8.2 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2018-04-04 · updated 2026-06-17
Weakness: CWE-200

Description

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).

Affected products

Yubico Pam: from 2.18 through 2.25

References

https://bugzilla.opensuse.org/show_bug.cgi?id=1088027
https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba
https://github.com/Yubico/yubico-pam/issues/136
https://bugzilla.opensuse.org/show_bug.cgi?id=1088027
https://github.com/Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba
https://github.com/Yubico/yubico-pam/issues/136

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