Debian DLA-2781-1 : neutron - LTS security update

medium Nessus Plugin ID 153994


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


The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2781 advisory.

- An issue was discovered in OpenStack Neutron before 16.4.1, 17.x before 17.2.1, and 18.x before 18.1.1.
Authenticated attackers can reconfigure dnsmasq via a crafted extra_dhcp_opts value. (CVE-2021-40085)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Upgrade the neutron packages.

For Debian 9 Stretch, these problems have been fixed in version 2

See Also

Plugin Details

Severity: Medium

ID: 153994

File Name: debian_DLA-2781.nasl

Version: 1.3

Type: local

Agent: unix

Published: 10/11/2021

Updated: 11/28/2023

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

Risk Information


Risk Factor: Medium

Score: 4.4


Risk Factor: Medium

Base Score: 4

Temporal Score: 3.1

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

CVSS Score Source: CVE-2021-40085


Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:neutron-common, p-cpe:/a:debian:debian_linux:neutron-dhcp-agent, p-cpe:/a:debian:debian_linux:neutron-l3-agent, p-cpe:/a:debian:debian_linux:neutron-linuxbridge-agent, p-cpe:/a:debian:debian_linux:neutron-macvtap-agent, p-cpe:/a:debian:debian_linux:neutron-metadata-agent, p-cpe:/a:debian:debian_linux:neutron-metering-agent, p-cpe:/a:debian:debian_linux:neutron-openvswitch-agent, p-cpe:/a:debian:debian_linux:neutron-plugin-linuxbridge-agent, p-cpe:/a:debian:debian_linux:neutron-plugin-nec-agent, p-cpe:/a:debian:debian_linux:neutron-plugin-openvswitch-agent, p-cpe:/a:debian:debian_linux:neutron-server, p-cpe:/a:debian:debian_linux:neutron-sriov-agent, p-cpe:/a:debian:debian_linux:python-neutron, cpe:/o:debian:debian_linux:9.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/11/2021

Vulnerability Publication Date: 8/31/2021

Reference Information

CVE: CVE-2021-40085