dnsmasq < 2.81 Denial of Service (DoS) Vulnerability

Medium Nessus Plugin ID 136411

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VPR Score: 1.4


The remote DNS / DHCP service is affected by DoS vulnerability


The version of dnsmasq installed on the remote host is prior to 2.81. It is, therefore, affected by a denial of service (DoS) vulnerability in 'helper.c' due to a memory leak. An unauthenticated, remote attacker can exploit this issue, to cause the application to stop responding.

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


Upgrade to dnsmasq 2.81 or later.

See Also



Plugin Details

Severity: Medium

ID: 136411

File Name: dnsmasq_2_81.nasl

Version: 1.2

Type: remote

Family: DNS

Published: 2020/05/08

Updated: 2020/05/13

Dependencies: 72779

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

VPR Score: 1.4

CVSS Score Source: CVE-2019-14834

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

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

CVSS v3.0

Base Score: 3.7

Temporal Score: 3.2

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

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

Vulnerability Information

CPE: cpe:/a:thekelleys:dnsmasq

Required KB Items: dns_server/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/08/19

Vulnerability Publication Date: 2019/08/19

Reference Information

CVE: CVE-2019-14834

IAVA: 2020-A-0194