Improper input validation in Linux Kernel
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.020 (78.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Linux Linux_kernel
- Yubico Pam_module
- Yubico-pam — versions before 2.10
- Debian Debian_linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
References
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC)
- secalert@redhat.com (Patch, Third Party Advisory, x_refsource_MISC, Issue Tracking)
- secalert@redhat.com (Third Party Advisory, x_refsource_MISC, Broken Link)
- secalert@redhat.com (Mailing List, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2011-4120?
- CVE-2011-4120 is a critical-severity vulnerability in Linux Kernel, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2019-11-26.
- How severe is CVE-2011-4120?
- Critical severity. CVSS v3 base score is 9.8 out of 10.