CVE-2011-4120 Details
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.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
No SSVC data is available for this CVE.
References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://access.redhat.com/security/cve/cve-2011-4120 | CVE | Broken LinkThird Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120 | CVE | Issue TrackingPatchThird Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2011-4120 | CVE | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2011/11/07/6 | CVE | Mailing ListThird Party Advisory |
| https://access.redhat.com/security/cve/cve-2011-4120 | [email protected] | Broken LinkThird Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120 | [email protected] | Issue TrackingPatchThird Party Advisory |
| https://security-tracker.debian.org/tracker/CVE-2011-4120 | [email protected] | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2011/11/07/6 | [email protected] | Mailing ListThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-20 | Improper Input Validation | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| yubico pam module | < 2.10 |
CPE
Remediation
| |
| linux linux kernel | All versions |
CPE
Remediation
| |
| debian debian linux | 8.0 9.0 10.0 |
CPE
Remediation
| |
Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 16, 2026 | CVE Modified | [email protected] |
| Nov 21, 2024 | CVE Modified | CVE |
| May 14, 2024 | CVE Modified | [email protected] |
| Aug 18, 2020 | CPE Deprecation Remap | [email protected] |
| Dec 16, 2019 | Initial Analysis | [email protected] |