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

high Nessus Plugin ID 125738

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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: High

ID: 125738

File Name: bind9_9117.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 6/6/2019

Updated: 11/4/2019

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2019-6469

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

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

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:2.3:a:isc:bind:*:*:*:*:*:*:*:*

Required KB Items: Settings/ParanoidReport, bind/version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/29/2019

Vulnerability Publication Date: 5/29/2019

Reference Information

CVE: CVE-2019-6469

BID: 108517