CVE-2021-3631
6.3 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
6.2 Medium
AI Score
Confidence
High
3.3 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:P/A:N
0.0005 Low
EPSS
Percentile
16.3%
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.
References
access.redhat.com/errata/RHSA-2021:3631
bugzilla.redhat.com/show_bug.cgi?id=1977726
gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2
gitlab.com/libvirt/libvirt/-/issues/153
lists.debian.org/debian-lts-announce/2024/04/msg00000.html
security.gentoo.org/glsa/202210-06
security.netapp.com/advisory/ntap-20220331-0010/
Social References
More
Related
6.3 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
HIGH
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
6.2 Medium
AI Score
Confidence
High
3.3 Low
CVSS2
Access Vector
LOCAL
Access Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:L/AC:M/Au:N/C:P/I:P/A:N
0.0005 Low
EPSS
Percentile
16.3%