CVE-2021-3631

EPSS 0.5%CWE-732

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

02 Mar 2022Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

Affected products

n/a · libvirt

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References

https://access.redhat.com/errata/RHSA-2021:3631 https://bugzilla.redhat.com/show_bug.cgi?id=1977726 https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2 https://gitlab.com/libvirt/libvirt/-/issues/153 https://lists.debian.org/debian-lts-announce/2024/04/msg00000.html https://security.gentoo.org/glsa/202210-06 https://security.netapp.com/advisory/ntap-20220331-0010/