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

Medium Nessus Plugin ID 126339

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VPR Score: 4.4


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: 2019/06/28

Updated: 2019/11/04

Dependencies: 10028

Risk Information

Risk Factor: Medium

VPR Score: 4.4

CVSS Score Source: CVE-2019-6471

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: 5.9

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: 2018/06/19

Vulnerability Publication Date: 2019/06/19

Reference Information

CVE: CVE-2019-6471

BID: 108854