CVE-2021-3975

CVSS V2 None CVSS V3 Medium 6.5
Description
A use-after-free flaw was found in libvirt. The qemuMonitorUnregister() function in qemuProcessHandleMonitorEOF is called using multiple threads without being adequately protected by a monitor lock. This flaw could be triggered by the virConnectGetAllDomainStats API when the guest is shutting down. An unprivileged client with a read-only connection could use this flaw to perform a denial of service attack by causing the libvirt daemon to crash.
Overview
  • CVE ID
  • CVE-2021-3975
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-08-23T20:15:08
  • Last Modified Date
  • 2023-02-03T16:30:10
Weakness Enumerations
CWE URL
CWE-416 http://cwe.mitre.org/data/definitions/416.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
AND
cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* 1 OR 7.1.0
AND
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:* 1 OR
AND
cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* 0 OR
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:* 0 OR
AND
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* 1 OR
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • NONE
  • Availability Impact
  • HIGH
  • Base Score
  • 6.5
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.8
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://access.redhat.com/security/cve/CVE-2021-3975 Issue Tracking Third Party Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2024326 Issue Tracking Patch Third Party Advisory
https://github.com/libvirt/libvirt/commit/1ac703a7d0789e46833f4013a3876c2e3af18ec7 Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20221201-0002/
https://ubuntu.com/security/CVE-2021-3975 Patch Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2021-3975
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3975
History
Created Old Value New Value Data Type Notes
2022-08-23 21:00:07 Added to TrackCVE
2022-12-06 14:34:41 2022-12-02T01:15:10 CVE Modified Date updated
2022-12-06 14:34:41 Analyzed Undergoing Analysis Vulnerability Status updated
2022-12-06 14:34:43 References updated
2023-02-03 17:13:46 2023-02-03T16:30:10 CVE Modified Date updated
2023-02-03 17:13:46 Undergoing Analysis Analyzed Vulnerability Status updated