ISC BIND 9.9.x < 9.9.9-P3 / 9.10.x < 9.10.4-P3 / 9.11.x < 9.11.0rc3 buffer.c Query Response DoS

high Nessus Plugin ID 93865

Language:

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.

Synopsis

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

Description

According to its self-reported version number, the version of ISC BIND running on the remote name server is 9.9.x prior to 9.9.9-P3, 9.10.x prior to 9.10.4-P3, or 9.11.x prior to 9.11.0rc3. It is, therefore, affected by a denial of service vulnerability within file buffer.c due to improper construction of responses to crafted requests. An unauthenticated, remote attacker can exploit this, via a specially crafted query, to cause an assertion failure, resulting in a daemon exit.

Solution

Upgrade to ISC BIND version 9.9.9-P3 / 9.9.9-S5 / 9.10.4-P3 / 9.11.0rc3 or later. Note that BIND 9 version 9.9.9-S5 is available exclusively for eligible ISC Support customers.

See Also

https://kb.isc.org/article/AA-01419

Plugin Details

Severity: High

ID: 93865

File Name: bind9_9104_p3.nasl

Version: 1.10

Type: remote

Family: DNS

Published: 10/5/2016

Updated: 6/29/2018

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: bind/version, Settings/ParanoidReport

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/27/2016

Vulnerability Publication Date: 9/27/2016

Reference Information

CVE: CVE-2016-2776

BID: 93188

EDB-ID: 40453

IAVA: 2017-A-0004