ISC BIND 9.9.8-Sx < 9.9.8-S5 REQUIRE Assertion DoS

medium Nessus Plugin ID 88716
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote name server is affected by a denial of service vulnerability.


According to its self-reported version number, the version of BIND 9 Supported Preview Edition running on the remote host is version 9.9.8-Sx prior to 9.9.8-S5. It is, therefore, affected by a denial of service vulnerability due to a flaw in file rdataset.c related to handling flag values in incoming queries when the 'nxdomain-redirect' option is enabled. An unauthenticated, remote attacker can exploit this, via a crafted query with the right combination of attributes, to cause a REQUIRE assertion failure, resulting in termination of the service.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Note that 9.9.8-S4 and 9.9.8-S5 are preview versions of BIND provided exclusively to ISC Support customers.


Upgrade to BIND version 9.9.8-S5 or later. Alternatively, contact the vendor regarding a patch for BIND version 9.9.8-S4.

See Also

Plugin Details

Severity: Medium

ID: 88716

File Name: bind9_998_S5.nasl

Version: 1.6

Type: remote

Family: DNS

Published: 2/12/2016

Updated: 11/20/2019

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2016-1284


Risk Factor: Low

Score: 3.6


Risk Factor: Low

Base Score: 2.6

Temporal Score: 1.9

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

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


Risk Factor: Medium

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: 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: 2/3/2016

Vulnerability Publication Date: 2/3/2016

Reference Information

CVE: CVE-2016-1284

BID: 82807