ISC BIND Assertion Failure Vulnerability (DoS)

high Nessus Plugin ID 122239


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 rbtdb.c due to the implementation of the new serve-stale feature and NSEC aggressive negative caching.

An unauthenticated, remote attacker can exploit this to cause undesirable behavior such as recurision looping or excessive logging, resulting in a degradation or denial of service.


Upgrade to ISC BIND version 9.12.1-P2 or later.

See Also

Plugin Details

Severity: High

ID: 122239

File Name: bind9_CVE-2018-5737.nasl

Version: 1.2

Type: remote

Family: DNS

Published: 2/15/2019

Updated: 10/31/2019

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2018-5737


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C


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: 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: 5/18/2018

Vulnerability Publication Date: 5/18/2018

Reference Information

CVE: CVE-2018-5737

BID: 104236