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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.020 (80.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 80th percentile — 80.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.020 · newest: 0.020 · change: 0.000
Affected products
- Linux Kernel
- Yubico Pam Module
- Yubico-Pam — versions before 2.10
- Debian Linux — versions 8.0, 9.0, 10.0
Weakness classification (CWE)
References
- security-tracker.debian.org/tracker/CVE-2011-4120 (Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- access.redhat.com/security/cve/cve-2011-4120 (Third Party Advisory, Broken Link)
- www.openwall.com/lists/oss-security/2011/11/07/6 (Mailing List, Third Party Advisory)
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.