dnsmasq < 2.76 Empty Address Denial of Service (CVE-2015-8899)

high Nessus Plugin ID 106138
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Synopsis

The remote DNS / DHCP service is affected by a denial of service vulnerability.

Description

The version of dnsmasq installed on the remote host is at least 2.73 and prior to 2.76, and thus, is affected by a denial of service vulnerability when handling a reply that a given name is empty while the A or AAAA record is defined locally and in a hosts file.

Solution

Upgrade to dnsmasq 2.76 or later.

See Also

http://www.thekelleys.org.uk/dnsmasq/CHANGELOG

http://www.nessus.org/u?1481bb05

Plugin Details

Severity: High

ID: 106138

File Name: dnsmasq_2_76.nasl

Version: 1.5

Type: remote

Family: DNS

Published: 1/18/2018

Updated: 11/8/2019

Dependencies: dns_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2015-8899

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

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

Temporal Vector: 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: 11/14/2014

Vulnerability Publication Date: 4/18/2016

Reference Information

CVE: CVE-2015-8899

BID: 91031