Debian DSA-4213-1 : qemu - security update (Spectre)

critical Nessus Plugin ID 110208


The remote Debian host is missing a security-related update.


Several vulnerabilities were discovered in qemu, a fast processor emulator.

- CVE-2017-15038 Tuomas Tynkkynen discovered an information leak in 9pfs.

- CVE-2017-15119 Eric Blake discovered that the NBD server insufficiently restricts large option requests, resulting in denial of service.

- CVE-2017-15124 Daniel Berrange discovered that the integrated VNC server insufficiently restricted memory allocation, which could result in denial of service.

- CVE-2017-15268 A memory leak in websockets support may result in denial of service.

- CVE-2017-15289 Guoxiang Niu discovered an OOB write in the emulated Cirrus graphics adaptor which could result in denial of service.

- CVE-2017-16845 Cyrille Chatras discovered an information leak in PS/2 mouse and keyboard emulation which could be exploited during instance migration.

- CVE-2017-17381 Dengzhan Heyuandong Bijunhua and Liweichao discovered that an implementation error in the virtio vring implementation could result in denial of service.

- CVE-2017-18043 Eric Blake discovered an integer overflow in an internally used macro which could result in denial of service.

- CVE-2018-5683 Jiang Xin and Lin ZheCheng discovered an OOB memory access in the emulated VGA adaptor which could result in denial of service.

- CVE-2018-7550 Cyrille Chatras discovered that an OOB memory write when using multiboot could result in the execution of arbitrary code.

This update also backports a number of mitigations against the Spectre v2 vulnerability affecting modern CPUs (CVE-2017-5715 ). For additional information please refer to


Upgrade the qemu packages.

For the stable distribution (stretch), these problems have been fixed in version 1:2.8+dfsg-6+deb9u4.

See Also

Plugin Details

Severity: Critical

ID: 110208

File Name: debian_DSA-4213.nasl

Version: 1.10

Type: local

Agent: unix

Published: 5/30/2018

Updated: 9/11/2020

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

Risk Information


Risk Factor: High

Score: 7.6


Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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


Risk Factor: Critical

Base Score: 10

Temporal Score: 9.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:qemu, cpe:/o:debian:debian_linux:9.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/29/2018

Vulnerability Publication Date: 10/10/2017

Reference Information

CVE: CVE-2017-15038, CVE-2017-15119, CVE-2017-15124, CVE-2017-15268, CVE-2017-15289, CVE-2017-16845, CVE-2017-17381, CVE-2017-18043, CVE-2017-5715, CVE-2018-5683, CVE-2018-7550

DSA: 4213