CVE-2021-3631

 

Published at: - 03-03-2022 12:15

Last modified: - 16-10-2022 07:15

Total changes: - 6

Description

A flaw was found in libvirt while it generates SELinux MCS category pairs for VMs' dynamic labels. This flaw allows one exploited guest to access files labeled for another guest, resulting in the breaking out of sVirt confinement. The highest threat from this vulnerability is to confidentiality and integrity.

Common Vulnerability Scoring System (CVSS)

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

 

Verification logic

 

Reference

• https://access.redhat.com/errata/RHSA-2021:3631
• https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
• https://bugzilla.redhat.com/show_bug.cgi?id=1977726
• https://gitlab.com/libvirt/libvirt/-/issues/153
• https://security.netapp.com/advisory/ntap-20220331-0010/
• GLSA-202210-06-

 

Keywords

NVD

 

CVE-2021-3631

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures