8.2high

CVE-2018-9275

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 t…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
8.2
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
1.4%
percentile 73%
Public exploits
0
none known

Summary

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).

Exploit prediction (EPSS)

1.42% probability of exploitation in the next 30 days, higher than 73% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.08.2CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
NVD2.06.4AV:N/AC:L/Au:N/C:P/I:N/A:P

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

  • bugzilla.opensuse.org /show_bug.cgi?id=1088027 · x_refsource_CONFIRM, x_transferred
  • github.com /Yubico/yubico-pam/commit/0f6ceabab0a8849b47f67d727aa526c2656089ba · x_refsource_CONFIRM, x_transferred
  • github.com /Yubico/yubico-pam/issues/136 · x_refsource_CONFIRM, x_transferred

Sources

vulnwire keeps one entry per vulnerability: the CVE id wins, then GHSA; records that alias each other are merged. Machine-readable: JSON.