CVE-2020-24612 Information

Description

An issue was discovered in the selinux-policy (aka Reference Policy) package 3.14 through 2020-08-24 because the .config/Yubico directory is mishandled. Consequently when SELinux is in enforced mode pam-u2f is not allowed to read the user’s U2F configuration file. If configured with the nouserok option (the default when configured by the authselect tool) and that file cannot be read the second factor is disabled. An attacker with only the knowledge of the password can then log in bypassing 2FA.

CVSS Vector

CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

Reference

https://bugzilla.redhat.com/show_bug.cgi?id=1860888 https://github.com/fedora-selinux/selinux-policy/commit/71e1989028802c7875d3436fd3966c587fa383fb

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

NONE

Base Score

NONE

Base Severity

4.7