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

Medium Nessus Plugin ID 106195

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.

See Also

http://www.nessus.org/u?61da09f5

http://www.nessus.org/u?74450c2e

https://seclists.org/oss-sec/2017/q4/382

Plugin Details

Severity: Medium

ID: 106195

File Name: powerdns_recursor_4_0_8.nasl

Version: 1.5

Type: remote

Family: DNS

Published: 2018/01/19

Modified: 2018/11/15

Dependencies: 34043

Risk Information

Risk Factor: Medium

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: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:L/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:powerdns:powerdns, cpe:/a:powerdns:recursor

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/12/11

Vulnerability Publication Date: 2017/12/11

Reference Information

CVE: CVE-2017-15120