Debian DLA-1313-1 : isc-dhcp security update

high Nessus Plugin ID 108569


The remote Debian host is missing a security update.


Several vulnerabilities have been discovered in the ISC DHCP client, relay and server. The Common Vulnerabilities and Exposures project identifies the following issues :


Felix Wilhelm of the Google Security Team discovered that the DHCP client is prone to an out-of-bound memory access vulnerability when processing specially constructed DHCP options responses, resulting in potential execution of arbitrary code by a malicious DHCP server.


Felix Wilhelm of the Google Security Team discovered that the DHCP server does not properly handle reference counting when processing client requests. A malicious client can take advantage of this flaw to cause a denial of service (dhcpd crash) by sending large amounts of traffic.

For Debian 7 'Wheezy', these problems have been fixed in version 4.2.2.dfsg.1-5+deb70u9.

We recommend that you upgrade your isc-dhcp 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.


Upgrade the affected packages.

See Also

Plugin Details

Severity: High

ID: 108569

File Name: debian_DLA-1313.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/23/2018

Updated: 1/11/2021

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

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

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


Risk Factor: High

Base Score: 7.5

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:isc-dhcp-client, p-cpe:/a:debian:debian_linux:isc-dhcp-client-dbg, p-cpe:/a:debian:debian_linux:isc-dhcp-client-udeb, p-cpe:/a:debian:debian_linux:isc-dhcp-common, p-cpe:/a:debian:debian_linux:isc-dhcp-dev, p-cpe:/a:debian:debian_linux:isc-dhcp-relay, p-cpe:/a:debian:debian_linux:isc-dhcp-relay-dbg, p-cpe:/a:debian:debian_linux:isc-dhcp-server, p-cpe:/a:debian:debian_linux:isc-dhcp-server-dbg, p-cpe:/a:debian:debian_linux:isc-dhcp-server-ldap, cpe:/o:debian:debian_linux:7.0

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

Patch Publication Date: 3/22/2018

Vulnerability Publication Date: 1/16/2019

Reference Information

CVE: CVE-2018-5732, CVE-2018-5733

IAVB: 2018-B-0034-S