Detections
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CentOS 7 : libvirt (RHSA-2020:4000)

medium Nessus Plugin ID 141632

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Synopsis

The remote CentOS Linux host is missing one or more security updates.

Description

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4000 advisory.

 - qemu/qemu_driver.c in libvirt before 6.0.0 mishandles the holding of a monitor job during a query to a guest agent, which allows attackers to cause a denial of service (API blockage). (CVE-2019-20485)

 - A NULL pointer dereference was found in the libvirt API responsible introduced in upstream version 3.10.0, and fixed in libvirt 6.0.0, for fetching a storage pool based on its target path. In more detail, this flaw affects storage pools created without a target path such as network-based pools like gluster and RBD.
 Unprivileged users with a read-only connection could abuse this flaw to crash the libvirt daemon, resulting in a potential denial of service. (CVE-2020-10703)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

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

Plugin Details

Severity: Medium

ID: 141632

File Name: centos_RHSA-2020-4000.nasl

Version: 1.6

Type: local

Agent: unix

Published: 10/20/2020

Updated: 10/9/2024

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Agentless Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:P

CVSS Score Source: CVE-2020-10703

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:centos:centos:libvirt-daemon-driver-network, 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-config-network, p-cpe:/a:centos:centos:libvirt, p-cpe:/a:centos:centos:libvirt-libs, p-cpe:/a:centos:centos:libvirt-daemon-driver-storage, 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

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/CentOS/release, Host/CentOS/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/20/2020

Vulnerability Publication Date: 3/19/2020

Reference Information

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

RHSA: 2020:4000