ISC BIND Assertion Failure Vulnerability (DoS)

medium Nessus Plugin ID 122238


The remote name server is affected by an assertion failure vulnerability.


According to its self-reported version, the instance of ISC BIND 9 running on the remote name server is 9.12.0 or 9.12.1. It is, therefore, affected by an assertion failure vulnerability which exists in the zone database reference counting mechanism due to attempting several transfers of a slave zone in quick succession.

An unauthenticated, remote attacker can exploit this to cause the named process to exit after failing the assertion test.


Upgrade to ISC BIND version 9.12.1-P1 or later.

See Also

Plugin Details

Severity: Medium

ID: 122238

File Name: bind9_CVE-2018-5736.nasl

Version: 1.2

Type: remote

Family: DNS

Published: 2/15/2019

Updated: 10/31/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information


Risk Factor: Low

Score: 3.6


Risk Factor: Low

Base Score: 3.5

Temporal Score: 2.6

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

CVSS Score Source: CVE-2018-5736


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

Vector: CVSS:3.0/AV:N/AC:H/PR:L/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: Settings/ParanoidReport, bind/version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2018

Vulnerability Publication Date: 5/18/2018

Reference Information

CVE: CVE-2018-5736

BID: 104386