Privilege Escalation in SELinux Policy Package Affects Authentication Mechanism
CVE-2020-24612

6.7MEDIUM

Key Information:

Vendor

Fedoraproject

Status
Selinux-policy
Vendor
CVE Published:
24 August 2020

What is CVE-2020-24612?

A vulnerability exists in the SELinux Policy Package, specifically related to pam-u2f's interaction with the user's U2F configuration file stored in the .config/Yubico directory. When SELinux is running in enforced mode, pam-u2f may be unable to access the U2F configuration file due to permission issues. If the system is set with the nouserok option (default configuration), users may find that their second-factor authentication mechanism is disabled, thus allowing unauthorized access if an attacker knows the user's password.

References

https://bugzilla.redhat.com/show_bug.cgi?id=1860888
x_refsource_MISC
https://github.com/fedora-selinux/selinux-policy/commit/7...
x_refsource_MISC

CVSS V3.1

Score:
6.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
High
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2020-24612 : Privilege Escalation in SELinux Policy Package Affects Authentication Mechanism