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CBL Mariner 2.0 Security Update: libvirt (CVE-2020-10701)

medium Nessus Plugin ID 172930

Synopsis

The remote CBL Mariner host is missing one or more security updates.

Description

The version of libvirt installed on the remote CBL Mariner 2.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2020-10701 advisory.

 - A missing authorization flaw was found in the libvirt API responsible for changing the QEMU agent response timeout. This flaw allows read-only connections to adjust the time that libvirt waits for the QEMU guest agent to respond to agent commands. Depending on the timeout value that is set, this flaw can make guest agent commands fail because the agent cannot respond in time. Unprivileged users with a read-only connection could abuse this flaw to set the response timeout for all guest agent messages to zero, potentially leading to a denial of service. This flaw affects libvirt versions before 6.2.0.
 (CVE-2020-10701)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2020-10701

Plugin Details

Severity: Medium

ID: 172930

File Name: mariner_libvirt_CVE-2020-10701.nasl

Version: 1.0

Type: local

Published: 3/20/2023

Updated: 3/20/2023

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2020-10701

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:microsoft:cbl-mariner:libvirt, p-cpe:/a:microsoft:cbl-mariner:libvirt-admin, p-cpe:/a:microsoft:cbl-mariner:libvirt-client, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-config-network, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-config-nwfilter, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-interface, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-network, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-nodedev, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-nwfilter, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-qemu, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-secret, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-core, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-disk, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-gluster, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-iscsi, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-logical, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-mpath, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-rbd, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-storage-scsi, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-driver-vbox, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-kvm, p-cpe:/a:microsoft:cbl-mariner:libvirt-daemon-vbox, p-cpe:/a:microsoft:cbl-mariner:libvirt-debuginfo, p-cpe:/a:microsoft:cbl-mariner:libvirt-devel, p-cpe:/a:microsoft:cbl-mariner:libvirt-docs, p-cpe:/a:microsoft:cbl-mariner:libvirt-libs, p-cpe:/a:microsoft:cbl-mariner:libvirt-lock-sanlock, p-cpe:/a:microsoft:cbl-mariner:libvirt-nss, x-cpe:/o:microsoft:cbl-mariner

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

Exploit Ease: No known exploits are available

Patch Publication Date: 6/8/2021

Vulnerability Publication Date: 5/27/2021

Reference Information

CVE: CVE-2020-10701