RHEL 7 : Virtualization Manager (RHSA-2019:1968)

high Nessus Plugin ID 127640
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VPR Score: 7.4

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

An update for qemu-kvm-rhev is now available for Red Hat Virtualization for Red Hat Virtualization Host 7.

Red Hat Product Security has rated this update as having a Important security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link (s) in the References section.

KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products.

Security Fix(es) :

* CVE-2018-20815 QEMU: device_tree: heap buffer overflow while loading device tree blob

* CVE-2019-6778 QEMU: slirp: heap buffer overflow in tcp_em

This update fixes the following bug :

* 1705364 RHV VM pauses when 'dd' issued inside guest to a direct lun configured as virtio-scsi with scsi-passthrough

Users of qemu-kvm are advised to upgrade to these updated packages.
After installing this update, shut down all running virtual machines.
Once all virtual machines have shut down, start them again for this update to take effect.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2019:1968

https://access.redhat.com/security/cve/cve-2018-20815

https://access.redhat.com/security/cve/cve-2019-6778

Plugin Details

Severity: High

ID: 127640

File Name: redhat-RHSA-2019-1968.nasl

Version: 1.7

Type: local

Agent: unix

Published: 8/12/2019

Updated: 1/6/2020

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 7.4

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:qemu-img-rhev, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-common-rhev, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-rhev-debuginfo, p-cpe:/a:redhat:enterprise_linux:qemu-kvm-tools-rhev, cpe:/o:redhat:enterprise_linux:7

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2019

Vulnerability Publication Date: 3/21/2019

Reference Information

CVE: CVE-2018-20815, CVE-2019-6778

RHSA: 2019:1968