ISC BIND 9.x < 9.9.9-P3 / 9.9.9-S5 / 9.10.4-P3 / 9.11.0-P1 DoS

high Nessus Network Monitor Plugin ID 9875
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 DNS server may be affected by a Denial of Service (DoS) attack vector.

Description

Versions of ISC BIND 9.x prior to 9.9.9-P3, 9.9.9-S5, 9.10.4-P3 and 9.11.0-P1 are unpatched for a flaw in 'buffer.c' that is triggered when building responses to specially crafted requests. This may allow a remote attacker to trigger an assertion failure and cause a crash.

Solution

Upgrade ISC BIND to version 9.11.0-P1 or later. If version 9.11.x cannot be obtained, versions 9.10.4-P3, 9.9.9-S5 and 9.9.9-P3 are also patched for these issues.

See Also

https://kb.isc.org/article/AA-01419/74/CVE-2016-2776%3A-Assertion-Failure-in-buffer.c-While-Building-Responses-to-a-Specifically-Constructed-Request.html

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

Plugin Details

Severity: High

ID: 9875

Family: DNS Servers

Published: 1/20/2017

Updated: 3/6/2019

Dependencies: 1003

Nessus ID: 93865

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.4

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

Temporal Vector: CVSS2#E:F/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

Vulnerability Information

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

Patch Publication Date: 9/27/2016

Vulnerability Publication Date: 9/27/2016

Reference Information

CVE: CVE-2016-2776

BID: 93188