ISC BIND 9.x < 9.9.8-P4 / 9.9.8-S6 / 9.9.9-S3 / 9.10.3-P4 Multiple DoS

high Nessus Network Monitor Plugin ID 9872

Synopsis

The remote DNS server may be affected by multiple Denial of Service (DoS) attack vectors.

Description

Versions of ISC BIND 9.x prior to 9.9.8-P4, 9.9.8-S6, 9.9.9-S3 and 9.10.3-P4 are unpatched for the following vulnerabilities :

- A flaw exists in 'sexpr.c' and 'alist.c' that is triggered when handling specially crafted control channel packets, as controlled by the the 'rndc' server control utility. This may allow a remote attacker to cause a server to stop responding.
- A flaw exists in 'resolver.c' and 'db.c' that is triggered when handling specially crafted DNAME resource record signatures. This may allow a remote attacker to cause a denial of service.

Solution

Upgrade ISC BIND to version 9.10.3-P4 or later. If version 9.10.x cannot be obtained, versions 9.9.9-S3, 9.9.8-S6 and 9.9.8-P4 are also patched for these vulnerabilities.

See Also

https://kb.isc.org/article/AA-01398

https://source.isc.org/cgi-bin/gitweb.cgi?p=bind9.git;a=blob_plain;f=CHANGES

https://kb.isc.org/article/AA-01352

https://kb.isc.org/article/AA-01353

Plugin Details

Severity: High

ID: 9872

Family: DNS Servers

Published: 1/20/2017

Updated: 3/6/2019

Nessus ID: 89998, 89999

Risk Information

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7.2

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:X/RL:O/RC:C

Vulnerability Information

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

Patch Publication Date: 3/9/2016

Vulnerability Publication Date: 3/9/2016

Reference Information

CVE: CVE-2016-1285, CVE-2016-1286