Vulnerabilities > CVE-2021-3631
Attack vector
LOCAL Attack complexity
HIGH Privileges required
LOW Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
NONE Summary
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.
Vulnerable Configurations
References
- https://access.redhat.com/errata/RHSA-2021:3631
- https://access.redhat.com/errata/RHSA-2021:3631
- https://bugzilla.redhat.com/show_bug.cgi?id=1977726
- https://bugzilla.redhat.com/show_bug.cgi?id=1977726
- https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
- https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
- https://gitlab.com/libvirt/libvirt/-/issues/153
- https://gitlab.com/libvirt/libvirt/-/issues/153
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html
- https://security.gentoo.org/glsa/202210-06
- https://security.gentoo.org/glsa/202210-06
- https://security.netapp.com/advisory/ntap-20220331-0010/
- https://security.netapp.com/advisory/ntap-20220331-0010/