CentOS 7:libvirt (RHSA-2020:4000)

medium Nessus Plugin ID 141632

概要

遠端 CentOS Linux 主機缺少一個或多個安全性更新。

說明

遠端 CentOS Linux 7 主機上安裝的套件受到 RHSA-2020:4000 公告中提及的多個弱點影響。

- 在 6.0.0 之前的 libvirt 中,qemu/qemu_driver.c 在查詢來賓代理程式期間,未正確處理監控工作的保留,攻擊者可利用此問題,造成拒絕服務 (API 封鎖)。(CVE-2019-20485)

- 在負責目標路徑擷取儲存集區的 libvirt API 中發現了一個 NULL 指標解除參照,該錯誤是在上游版本 3.10.0 中引入,並在 6.0.0 中得到修復。更詳細地說,此瑕疵會影響在沒有目標路徑的情況下建立的儲存集區,例如 gluster 和 RBD 等網路型集區。
具有唯讀連線的無權限使用者可濫用此瑕疵造成 libvirt 程序損毀,進而可能導致拒絕服務。(CVE-2020-10703)

請注意,Nessus 並未測試這些問題,而是僅依據應用程式自我報告的版本號碼作出判斷。

解決方案

更新受影響的套件。

另請參閱

https://access.redhat.com/errata/RHSA-2020:4000

Plugin 詳細資訊

嚴重性: Medium

ID: 141632

檔案名稱: centos_RHSA-2020-4000.nasl

版本: 1.6

類型: local

代理程式: unix

已發布: 2020/10/20

已更新: 2024/10/9

支援的感應器: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Agentless Assessment, Continuous Assessment, Nessus

風險資訊

VPR

風險因素: Medium

分數: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

風險因素: Medium

基本分數: 4

時間性分數: 3.1

媒介: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS 評分資料來源: CVE-2020-10703

CVSS v3

風險因素: Medium

基本分數: 6.5

時間性分數: 5.9

媒介: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

時間媒介: CVSS:3.0/E:P/RL:O/RC:C

弱點資訊

CPE: p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-disk, p-cpe:/a:centos:centos:libvirt-lock-sanlock, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:centos:centos:libvirt-daemon-driver-interface, p-cpe:/a:centos:centos:libvirt-login-shell, p-cpe:/a:centos:centos:libvirt-daemon-driver-qemu, p-cpe:/a:centos:centos:libvirt-nss, p-cpe:/a:centos:centos:libvirt-daemon-kvm, p-cpe:/a:centos:centos:libvirt-daemon, p-cpe:/a:centos:centos:libvirt-admin, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-core, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-logical, p-cpe:/a:centos:centos:libvirt-devel, p-cpe:/a:centos:centos:libvirt-docs, p-cpe:/a:centos:centos:libvirt-client, p-cpe:/a:centos:centos:libvirt-daemon-config-nwfilter, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-gluster, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-rbd, p-cpe:/a:centos:centos:libvirt-daemon-driver-lxc, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:libvirt-bash-completion, p-cpe:/a:centos:centos:libvirt-daemon-lxc, p-cpe:/a:centos:centos:libvirt-daemon-driver-nwfilter, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-mpath, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage-scsi, p-cpe:/a:centos:centos:libvirt-daemon-driver-nodedev, p-cpe:/a:centos:centos:libvirt-daemon-driver-secret, p-cpe:/a:centos:centos:libvirt-daemon-driver-network, p-cpe:/a:centos:centos:libvirt-daemon-config-network, p-cpe:/a:centos:centos:libvirt, p-cpe:/a:centos:centos:libvirt-libs, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage

必要的 KB 項目: Host/local_checks_enabled, Host/cpu, Host/CentOS/release, Host/CentOS/rpm-list

可被惡意程式利用: true

可輕鬆利用: Exploits are available

修補程式發佈日期: 2020/10/20

弱點發布日期: 2020/3/19

參考資訊

CVE: CVE-2019-20485, CVE-2020-10703

RHSA: 2020:4000