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FreeBSD : PowerDNS -- Insufficient validation in the HTTP remote backend (6001cfc6-9f0f-4fae-9b4f-9b8fae001425)

high Nessus Plugin ID 122960

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Synopsis

The remote FreeBSD host is missing a security-related update.

Description

PowerDNS developers report :

An issue has been found in PowerDNS Authoritative Server when the HTTP remote backend is used in RESTful mode (without post=1 set), allowing a remote user to cause the HTTP backend to connect to an attacker-specified host instead of the configured one, via a crafted DNS query. This can be used to cause a denial of service by preventing the remote backend from getting a response, content spoofing if the attacker can time its own query so that subsequent queries will use an attacker-controlled HTTP server instead of the configured one, and possibly information disclosure if the Authoritative Server has access to internal servers.

Solution

Update the affected package.

See Also

http://www.nessus.org/u?5d136059

http://www.nessus.org/u?e53d12c8

Plugin Details

Severity: High

ID: 122960

File Name: freebsd_pkg_6001cfc69f0f4fae9b4f9b8fae001425.nasl

Version: 1.3

Type: local

Published: 3/20/2019

Updated: 2/3/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:powerdns, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 3/19/2019

Vulnerability Publication Date: 3/18/2019

Reference Information

CVE: CVE-2019-3871