ISC BIND Race Condition Vulnerability (CVE-2019-6471)

medium Nessus Plugin ID 126339


The remote name server is affected by a race condition vulnerability.


According to its self-reported version, the instance of ISC BIND 9 running on the remote name server is between 9.11.0 and 9.11.7, 9.11.3-S1 and 9.11.7-S1, 9.12.0 and 9.12.4-P1, 9.13.x, 9.14.0 and 9.14.3, or 9.15 It is, therefore, affected by a race condition vulnerability, which may cause BIND to exit with an assertion failure when discarding malformed packets.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.


Upgrade to ISC BIND version 9.11.8 / 9.11.8-S1 / 9.12.4-P2 / 9.14.3 / 9.15.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 126339

File Name: bind9_CVE-2019-6471.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 6/28/2019

Updated: 11/4/2019

Risk Information


Risk Factor: Low

Score: 3.6


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

CVSS Score Source: CVE-2019-6471


Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/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: installed_sw/BIND DNS Server

Exploit Ease: No known exploits are available

Patch Publication Date: 6/19/2018

Vulnerability Publication Date: 6/19/2019

Reference Information

CVE: CVE-2019-6471

BID: 108854