CVE-2011-4120 - CVE House
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Status published Critical CVE-2011-4120

Yubico PAM Module before 2.10 performed user authentication when 'use_first_pass'...

Vulnerability 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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

Affected Vendor

Affected Software

yubico-pam
Vulnerable Versions:
before 2.10

Timeline

Official Publish: November 26th, 2019
Last Modified: August 7th, 2024
Added to House: July 19th, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.