CVEvulnerability
CVE-2011-4120
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2019-11-26
- Last modified
- 2026-06-16
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-20
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.
Affected configurations
• yubico pam module (< 2.10)
• debian debian linux 8.0
• debian debian linux 9.0
• debian debian linux 10.0
Related
Weakness · CWE (1)
- CWE-20 Improper Input Validation weakness
References
- https://access.redhat.com/security/cve/cve-2011-4120 Broken Link, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120 Issue Tracking, Patch, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2011-4120 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2011/11/07/6 Mailing List, Third Party Advisory
- https://access.redhat.com/security/cve/cve-2011-4120 Broken Link, Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120 Issue Tracking, Patch, Third Party Advisory
- https://security-tracker.debian.org/tracker/CVE-2011-4120 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2011/11/07/6 Mailing List, Third Party Advisory