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cve[email protected]CVE-2021-3631
HistoryMar 02, 2022 - 11:15 p.m.

CVE-2021-3631

2022-03-0223:15:00
CWE-732
web.nvd.nist.gov
141
4
libvirt
selinux
mcs
category pairs
vms
svirt confinement
vulnerability
confidentiality
integrity
nvd
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

16.5%

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.

VendorProductVersionCPE
redhatlibvirt*cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:*

Social References

More

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

16.5%