Debian DSA-4003-1 : libvirt - security update

high Nessus Plugin ID 103994


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


Daniel P. Berrange reported that Libvirt, a virtualisation abstraction library, does not properly handle the default_tls_x509_verify (and related) parameters in qemu.conf when setting up TLS clients and servers in QEMU, resulting in TLS clients for character devices and disk devices having verification turned off and ignoring any errors while validating the server certificate.

More informations in .


Upgrade the libvirt packages.

For the stable distribution (stretch), this problem has been fixed in version 3.0.0-4+deb9u1.

See Also

Plugin Details

Severity: High

ID: 103994

File Name: debian_DSA-4003.nasl

Version: 3.5

Type: local

Agent: unix

Published: 10/20/2017

Updated: 1/4/2021

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

Risk Information


Risk Factor: Medium

Score: 5.9


Risk Factor: Medium

Base Score: 6.8

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


Risk Factor: High

Base Score: 8.1

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

Vulnerability Information

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

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

Patch Publication Date: 10/19/2017

Reference Information

CVE: CVE-2017-1000256

DSA: 4003