CVE-2021-3631

CVSS V2 Low 3.3 CVSS V3 Medium 6.3
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.
Overview
  • CVE ID
  • CVE-2021-3631
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-03-02T23:15:08
  • Last Modified Date
  • 2022-10-28T20:09:53
Weakness Enumerations
CWE URL
CWE-732 http://cwe.mitre.org/data/definitions/732.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* 1 OR 7.5.0
cpe:2.3:a:redhat:openshift_container_platform:4.8:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:advanced_virtualization:*:*:* 1 OR
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:L/AC:M/Au:N/C:P/I:P/A:N
  • Access Vector
  • LOCAL
  • Access Compatibility
  • MEDIUM
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.3
  • Severity
  • LOW
  • Exploitability Score
  • 3.4
  • Impact Score
  • 4.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N
  • Attack Vector
  • LOCAL
  • Attack Compatibility
  • HIGH
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 6.3
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 1
  • Impact Score
  • 5.2
References
Reference URL Reference Tags
https://access.redhat.com/errata/RHSA-2021:3631 Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1977726 Issue Tracking Vendor Advisory
https://gitlab.com/libvirt/libvirt/-/commit/15073504dbb624d3f6c911e85557019d3620fdb2 Patch Third Party Advisory
https://gitlab.com/libvirt/libvirt/-/issues/153 Exploit Third Party Advisory
https://security.gentoo.org/glsa/202210-06 Third Party Advisory
https://security.netapp.com/advisory/ntap-20220331-0010/ Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-3631
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3631
History
Created Old Value New Value Data Type Notes
2022-04-04 00:39:52 Added to TrackCVE
2022-12-06 11:11:07 2022-03-02T23:15Z 2022-03-02T23:15:08 CVE Published Date updated
2022-12-06 11:11:07 2022-10-28T20:09:53 CVE Modified Date updated
2022-12-06 11:11:07 Analyzed Vulnerability Status updated
2022-12-06 11:11:12 References updated