Detections
Analytics

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

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

Nessus ID: 93865

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

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

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:/a:isc:bind

Patch Publication Date: 9/27/2016

Vulnerability Publication Date: 9/27/2016

Reference Information

CVE: CVE-2016-2776

BID: 93188