CVE-2011-4120
9.8
CRITICAL
CVSS 3.1
EPSS 1.5%
Description
Yubico PAM Module before 2.10 performed user authentication when 'use_first_pass' PAM configuration option was not used and the module was configured as 'sufficient' in the PAM configuration. A remote attacker could use this flaw to circumvent common authentication process and obtain access to the account in question by providing a NULL value (pressing Ctrl-D keyboard sequence) as the password string.
How to fix CVE-2011-4120
To remediate CVE-2011-4120, upgrade the affected package to a fixed version below.
- —upgrade to 2.10-1 or later
Is CVE-2011-4120 being exploited?
Low — EPSS is 1.5%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 2.10-1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |