ISC BIND Allow-Recursion Vulnerability

high Nessus Plugin ID 122240
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The remote name server is affected by an allow-recursion vulnerability.


According to its self-reported version, the instance of ISC BIND 9 running on the remote name server is 9.9.12, 9.10.7, 9.11.3, 9.12.0 prior to or equal to 9.12.1-P2, development release 9.13.0, 9.9.12-S1, 9.11.3-S1, or 9.11.3-S2. It is, therefore, affected by an allow-recursion vulnerability which exists in the named.conf due to a regression issue introduced by change #4777.

An unauthenticated, remote attacker can exploit this to cause undesirable behavior such as a degradation or denial of service, DNS reflection attacks, or potentially leak private information about what queries have been performed.


Upgrade to ISC BIND version 9.9.13 / 9.10.8 / 9.11.4 / 9.12.2 or later or apply the workaround as per the vendor advisory.

See Also

Plugin Details

Severity: High

ID: 122240

File Name: bind9_CVE-2018-5738.nasl

Version: 1.3

Type: remote

Family: DNS

Published: 2/15/2019

Updated: 10/31/2019

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2018-5738


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

Temporal Vector: CVSS2#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:H/I:N/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*

Required KB Items: Settings/ParanoidReport, bind/version

Exploit Ease: No known exploits are available

Patch Publication Date: 6/12/2018

Vulnerability Publication Date: 6/12/2018

Reference Information

CVE: CVE-2018-5738