Debian DLA-653-1 : qemu-kvm security update

Critical Nessus Plugin ID 93970

Synopsis

The remote Debian host is missing a security update.

Description

Multiple vulnerabilities have been found in qemu-kvm :

CVE-2016-7161

Heap-based buffer overflow in the .receive callback of xlnx.xps-ethernetlite in qemu-kvm allows attackers to execute arbitrary code on the QEMU host via a large ethlite packet.

CVE-2016-7170

The vmsvga_fifo_run function in hw/display/vmware_vga.c in qemu-kvm is vulnerable to an OOB memory access.

CVE-2016-7908

The mcf_fec_do_tx function in hw/net/mcf_fec.c in qemu-kvm does not properly limit the buffer descriptor count when transmitting packets, which allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via vectors involving a buffer descriptor with a length of 0 and crafted values in bd.flags.

For Debian 7 'Wheezy', these problems have been fixed in version 1.1.2+dfsg-6+deb7u16.

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.

See Also

https://lists.debian.org/debian-lts-announce/2016/10/msg00009.html

https://packages.debian.org/source/wheezy/qemu-kvm

Plugin Details

Severity: Critical

ID: 93970

File Name: debian_DLA-653.nasl

Version: 2.4

Type: local

Agent: unix

Published: 2016/10/12

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Critical

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

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

Temporal Vector: CVSS2#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: 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, p-cpe:/a:debian:debian_linux:qemu-kvm-dbg, cpe:/o:debian:debian_linux:7.0

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/10/11

Reference Information

CVE: CVE-2016-7161, CVE-2016-7170, CVE-2016-7908