Debian DLA-574-1 : qemu-kvm security update

high Nessus Plugin ID 92004

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Synopsis

The remote Debian host is missing a security update.

Description

Multiple vulnerabilities have been discovered in qemu-kvm, a full virtualization solution on x86 hardware. The Common Vulnerabilities and Exposures project identifies the following problems :

CVE-2015-5239

Lian Yihan discovered that QEMU incorrectly handled certain payload messages in the VNC display driver. A malicious guest could use this issue to cause the QEMU process to hang, resulting in a denial of service.

CVE-2016-2857

Ling Liu discovered that QEMU incorrectly handled IP checksum routines. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly leak host memory bytes.

CVE-2016-4020

Donghai Zdh discovered that QEMU incorrectly handled the Task Priority Register(TPR). A privileged attacker inside the guest could use this issue to possibly leak host memory bytes.

CVE-2016-4439, CVE-2016-6351

Li Qiang disovered that the emulation of the 53C9X Fast SCSI Controller is affected by out of bound access issues.

CVE-2016-5403

Zhenhao Hong discovered that a malicious guest administrator can cause unbounded memory allocation in QEMU (which can cause an Out-of-Memory condition) by submitting virtio requests without bothering to wait for completion.

For Debian 7 'Wheezy', these problems have been fixed in version 1.1.2+dfsg-6+deb7u14.

We recommend that you upgrade your qemu-kvm packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected kvm, qemu-kvm, and qemu-kvm-dbg packages.

Plugin Details

Severity: High

ID: 92004

File Name: debian_DLA-574.nasl

Version: 2.10

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/12/2016

Updated: 1/11/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS v3

Risk Factor: High

Base Score: 8.2

Temporal Score: 7.1

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:kvm, p-cpe:/a:debian:debian_linux:qemu-kvm-dbg, p-cpe:/a:debian:debian_linux:qemu-kvm, cpe:/o:debian:debian_linux:7.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2016

Reference Information

CVE: CVE-2015-5239, CVE-2016-2857, CVE-2016-4020, CVE-2016-4439, CVE-2016-5403, CVE-2016-6351

Detections

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