PowerDNS Recursor 4.0.x < 4.0.8 CNAME Parser DoS (CVE-2017-15120)

high Nessus Plugin ID 106195

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Synopsis

The remote name server is affected by a denial of service vulnerability.

Description

According to its self-reported version number, the version of the PowerDNS Recursor listening on the remote host is version 4.0.x prior to 4.0.8. It is, therefore, affected by a denial of service vulnerability in the CNAME parser.

Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported version number.
Also, Nessus has not checked for the presence of the patch.

Solution

Upgrade to PowerDNS Recursor 4.0.8 or later. Alternatively, apply the patches referenced in the vendor advisories.

Plugin Details

Severity: High

ID: 106195

File Name: powerdns_recursor_4_0_8.nasl

Version: 1.6

Type: remote

Family: DNS

Published: 1/19/2018

Updated: 11/8/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2017-15120

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

Vulnerability Information

CPE: cpe:/a:powerdns:powerdns, cpe:/a:powerdns:recursor

Required KB Items: pdns/version_full, pdns/version_source, pdns/type, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 12/11/2017

Vulnerability Publication Date: 12/11/2017

Reference Information

CVE: CVE-2017-15120

Detections

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