CVE-2011-4120
Critical
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Yubico Pam Module
PublishedNov 26, 2019
First seenNov 26, 2019
How to fix
Update
- yubico pam_module2.10 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| yubico pam_module | v < 2.10 | 2.10 |
| debian debian_linux | 8.0, 9.0, 10.0 | — |
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