SB2022050302 - Security restrictions bypass in libvirt
Published: May 3, 2022
Security Bulletin ID
SB2022050302
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Incorrect permission assignment for critical resource (CVE-ID: CVE-2021-3631)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to an error in the way SELinux MCS category pairs for VMs' dynamic labels in security/security_selinux.c. An attacker with access to the guest OS can access files labeled for another guest.
Remediation
Install update from vendor's website.