ISC BIND 9.10.5-S1 <= 9.11.6-S1 EDNS Client Subnet RRSIG Denial of Service

Medium Nessus Plugin ID 125738

Synopsis

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

Description

The version of ISC BIND Supported Preview Edition running on the remote host is version 9.10.5-S1 through 9.11.6-S1. It is, therefore, affected by an error related to handling RRSIG data that allows an attacker to crash the application if the EDNS Client Subnet (ECS) feature is enabled.

Solution

Upgrade to ISC BIND version 9.11.7-S1 or later.

See Also

http://www.nessus.org/u?75568163

Plugin Details

Severity: Medium

ID: 125738

File Name: bind9_9117.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 2019/06/06

Updated: 2019/11/04

Dependencies: 10028

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2019-6469

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: 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:isc:bind

Required KB Items: bind/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/05/29

Vulnerability Publication Date: 2019/05/29

Reference Information

CVE: CVE-2019-6469

BID: 108517