Vulnerability Details CVE-2011-4120
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.015
EPSS Ranking 79.9%
CVSS Severity
CVSS v3 Score 9.8
CVSS v2 Score 7.5
References
- https://access.redhat.com/security/cve/cve-2011-4120
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120
- https://security-tracker.debian.org/tracker/CVE-2011-4120
- https://www.openwall.com/lists/oss-security/2011/11/07/6
- https://access.redhat.com/security/cve/cve-2011-4120
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-4120
- https://security-tracker.debian.org/tracker/CVE-2011-4120
- https://www.openwall.com/lists/oss-security/2011/11/07/6
Products affected by CVE-2011-4120
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cpe:2.3:a:yubico:pam_module:1.0
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cpe:2.3:a:yubico:pam_module:1.1
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cpe:2.3:a:yubico:pam_module:1.10
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cpe:2.3:a:yubico:pam_module:1.11
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cpe:2.3:a:yubico:pam_module:1.2
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cpe:2.3:a:yubico:pam_module:1.3
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cpe:2.3:a:yubico:pam_module:1.4
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cpe:2.3:a:yubico:pam_module:1.5
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cpe:2.3:a:yubico:pam_module:1.6
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cpe:2.3:a:yubico:pam_module:1.7
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cpe:2.3:a:yubico:pam_module:1.8
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cpe:2.3:a:yubico:pam_module:1.9
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cpe:2.3:a:yubico:pam_module:2.1
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cpe:2.3:a:yubico:pam_module:2.2
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cpe:2.3:a:yubico:pam_module:2.3
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cpe:2.3:a:yubico:pam_module:2.4
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cpe:2.3:a:yubico:pam_module:2.5
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cpe:2.3:a:yubico:pam_module:2.6
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cpe:2.3:a:yubico:pam_module:2.7
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cpe:2.3:a:yubico:pam_module:2.8
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cpe:2.3:a:yubico:pam_module:2.9
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cpe:2.3:o:debian:debian_linux:10.0
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cpe:2.3:o:debian:debian_linux:8.0
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cpe:2.3:o:debian:debian_linux:9.0
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cpe:2.3:o:linux:linux_kernel:-