Debian DSA-4844-1 : dnsmasq - security update

high Nessus Plugin ID 146242


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


Moshe Kol and Shlomi Oberman of JSOF discovered several vulnerabilities in dnsmasq, a small caching DNS proxy and DHCP/TFTP server. They could result in denial of service, cache poisoning or the execution of arbitrary code.


Upgrade the dnsmasq packages.

For the stable distribution (buster), these problems have been fixed in version 2.80-1+deb10u1.

See Also

Plugin Details

Severity: High

ID: 146242

File Name: debian_DSA-4844.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2/5/2021

Updated: 2/9/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 8.3

Temporal Score: 6.1

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Risk Factor: High

Base Score: 8.1

Temporal Score: 7.1

Vector: CVSS:3.0/AV:N/AC:H/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: cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*, p-cpe:2.3:a:debian:debian_linux:dnsmasq:*:*:*:*:*:*:*

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2/2/2021

Vulnerability Publication Date: 1/20/2021

Reference Information

CVE: CVE-2020-25684, CVE-2020-25685, CVE-2020-25686, CVE-2020-25681, CVE-2020-25682, CVE-2020-25683, CVE-2020-25687

DSA: 4844