ISC BIND Assertion Failure Vulnerability

high Nessus Plugin ID 122237


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 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1 or 9.10.6-S2. It is, therefore, affected by an assertion failure vulnerability which exists in badcache.c due to selecting a SERVFAIL rcode instead of a FORMERR rcode. An unauthenticated attacker can exploit this to cause an assertion failure when the request doesn't contain all the expected information.


Upgrade to ISC BIND version 9.10.6-S3 or later.

See Also

Plugin Details

Severity: High

ID: 122237

File Name: bind9_CVE-2018-5734.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-2018-5734


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: 2/28/2018

Vulnerability Publication Date: 2/28/2018

Reference Information

CVE: CVE-2018-5734

BID: 103189