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

medium Nessus Plugin ID 88716


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

Configuration: Enable paranoid mode

Risk Information


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

CVSS Score Source: CVE-2016-1284


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