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CVE-2021-3631

Published: Mar 2, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-732
NVD MITRE
6.3CVSSMEDIUM
EPSS Score
0.5%
Top 61.6%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:LAC:HPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:LAttack Vector
Local
AC:HAttack Complexity
High
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-732

Affected Products

libvirtredhat
On-premLibrary
Operating Systems / linux-distro
openshift container platformredhat
SaaSSaaS Service
Cloud & SaaS / container-orchestration
enterprise linuxredhat
On-premOS
Operating Systems / linux-distro
ontap select deploy administration utilitynetappHardware Firmware
libvirtn/a
redhatcommercialUSOperating Systemsaka red hat
netappcommercialUSHardware Firmware
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://access.redhat.com/errata/RHSA-2021:3631
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=1977726
bugzilla.redhat.com
https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
gitlab.com
and 7 more references View all →

Timeline

Published
Mar 2, 2022
Last Updated
Nov 21, 2024

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