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

Medium Nessus Plugin ID 106138

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: Medium

ID: 106138

File Name: dnsmasq_2_76.nasl

Version: $Revision: 1.2 $

Type: remote

Family: DNS

Published: 2018/01/18

Modified: 2018/01/19

Dependencies: 72779

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.3

Temporal Score: 3.6

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:ND

CVSSv3

Base Score: 5.3

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

Vulnerability Information

CPE: cpe:/a:thekelleys:dnsmasq

Required KB Items: dns_server/version, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2014/11/14

Vulnerability Publication Date: 2016/04/18

Reference Information

CVE: CVE-2015-8899

BID: 91031