CVE-2011-4120 describes a critical authentication bypass vulnerability in Yubico PAM Module versions prior to 2.10, affecting Debian and Linux systems. This flaw allowed a remote attacker to gain unauthorized access by providing a NULL password (Ctrl-D) when the module was configured as 'sufficient' and 'use_first_pass' was not enabled. With a CVSS score of 9.8 (CRITICAL), the vulnerability presents a high risk of complete compromise (confidentiality, integrity, and availability). While no active exploitation, public exploit code, or significant community discussion has been observed, the ease of exploitation and severe impact warrant attention.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 2.10CPE matchmatch criteria | cpe:2.3:a:yubico:pam_module:*:*:*:*:*:*:*:* | ||
8.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* | ||
9.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* | ||
10.0CPE matchmatch criteria | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.