NVD Vulnerability Detail
Search Exploit, PoC
CVE-2021-3975
Summary

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.

Publication Date Aug. 24, 2022, 5:15 a.m.
Registration Date Aug. 24, 2022, 10 a.m.
Last Update Nov. 21, 2024, 3:23 p.m.
CVSS3.1 : MEDIUM
スコア 6.5
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
攻撃元区分(AV) ネットワーク
攻撃条件の複雑さ(AC) 低
攻撃に必要な特権レベル(PR) 低
利用者の関与(UI) 不要
影響の想定範囲(S) 変更なし
機密性への影響(C) なし
完全性への影響(I) なし
可用性への影響(A) 高
Affected software configurations
Configuration1 or higher or less more than less than
cpe:2.3:a:redhat:libvirt:*:*:*:*:*:*:*:* 7.1.0
Configuration2 or higher or less more than less than
cpe:2.3:o:canonical:ubuntu_linux:21.10:*:*:*:*:*:*:*
Configuration3 or higher or less more than less than
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Configuration4 or higher or less more than less than
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
Configuration5 or higher or less more than less than
cpe:2.3:a:redhat:codeready_linux_builder:-:*:*:*:*:*:*:*
execution environment
1 cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
2 cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*
3 cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*
4 cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*
5 cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*
6 cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*
Configuration6 or higher or less more than less than
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
Configuration7 or higher or less more than less than
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
Related information, measures and tools
Common Vulnerabilities List
JVN Vulnerability Information
レッドハットの libvirt 他複数ベンダの製品における解放済みメモリの使用に関する脆弱性
Title レッドハットの libvirt 他複数ベンダの製品における解放済みメモリの使用に関する脆弱性
Summary

レッドハットの libvirt 他複数ベンダの製品には、解放済みメモリの使用に関する脆弱性が存在します。

Possible impacts サービス運用妨害 (DoS) 状態にされる可能性があります。
Solution

ベンダアドバイザリまたはパッチ情報が公開されています。参考情報を参照して適切な対策を実施してください。
Publication Date Nov. 18, 2021, midnight
Registration Date Sept. 27, 2023, 5:47 p.m.
Last Update Sept. 27, 2023, 5:47 p.m.
Affected System
レッドハット
codeready linux builder 
libvirt 7.1.0 未満
Red Hat Enterprise Linux 8.0
Red Hat Enterprise Linux EUS 8.6
Red Hat Enterprise Linux for IBM z Systems 8.0
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6
Red Hat Enterprise Linux for Power Little Endian Update Services for SAP Solutions 8.6
Red Hat Enterprise Linux for Power, little endian 8.0
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6
Red Hat Enterprise Linux Server TUS 8.6
Debian
Debian GNU/Linux 10.0
Debian GNU/Linux 11.0
Fedora Project
Fedora 35
Canonical
Ubuntu 21.10
NetApp
ONTAP Select Deploy administration utility 
CVE (情報セキュリティ 共通脆弱性識別子)
CWE (共通脆弱性タイプ一覧)
その他
Change Log
No Changed Details Date of change
1 [2023年09月27日]
  掲載		 Sept. 27, 2023, 5:47 p.m.