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Virtuozzo 7 : kmod-kvm / kmod-kvm-debug / kvm / kvm-qemu-img / etc (VZLSA-2017-0454)

critical Nessus Plugin ID 101434

Synopsis

The remote Virtuozzo host is missing a security update.

Description

An update for kvm is now available for Red Hat Enterprise Linux 5.

Red Hat Product Security has rated this update as having a security impact of Important. 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 (for Kernel-based Virtual Machine) is a full virtualization solution for Linux on x86 hardware. Using KVM, one can run multiple virtual machines running unmodified Linux or Windows images. Each virtual machine has private virtualized hardware: a network card, disk, graphics adapter, etc.

Security Fix(es) :

* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or potentially execute arbitrary code on the host with privileges of QEMU process on the host. (CVE-2017-2615)

* Quick emulator (QEMU) built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrus_bitblt_cputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute arbitrary code on host with privileges of the QEMU process. (CVE-2017-2620)

Red Hat would like to thank Wjjzhang (Tencent.com Inc.) and Li Qiang (360.cn Inc.) for reporting CVE-2017-2615.

Note that Tenable Network Security has attempted to extract the preceding description block directly from the corresponding Red Hat security advisory. Virtuozzo provides no description for VZLSA advisories. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected kmod-kvm / kmod-kvm-debug / kvm / kvm-qemu-img / etc package.

See Also

http://www.nessus.org/u?5c8c608a

https://access.redhat.com/errata/RHSA-2017-0454

Plugin Details

Severity: Critical

ID: 101434

File Name: Virtuozzo_VZLSA-2017-0454.nasl

Version: 1.63

Type: local

Published: 7/13/2017

Updated: 6/3/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.3

CVSS v2

Risk Factor: High

Base Score: 9

Temporal Score: 8.1

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

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.6

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

Temporal Vector: CVSS:3.0/E:P/RL:U/RC:X

Vulnerability Information

CPE: p-cpe:/a:virtuozzo:virtuozzo:kmod-kvm, p-cpe:/a:virtuozzo:virtuozzo:kmod-kvm-debug, p-cpe:/a:virtuozzo:virtuozzo:kvm, p-cpe:/a:virtuozzo:virtuozzo:kvm-qemu-img, p-cpe:/a:virtuozzo:virtuozzo:kvm-tools, cpe:/o:virtuozzo:virtuozzo:7

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

Patch Publication Date: 3/8/2017

Reference Information

CVE: CVE-2017-2615, CVE-2017-2620

IAVB: 2017-B-0024-S