ISC BIND 9.0.x < 9.9.7-P3 / 9.10.x < 9.10.2-P4 Multiple DoS

high Nessus Plugin ID 85896
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Synopsis

The remote name server is affected by multiple denial of service vulnerabilities.

Description

According to its self-reported version number, the installation of ISC BIND running on the remote name server is potentially affected by the following vulnerabilities :

- A denial of service vulnerability exists due to an assertion flaw that is triggered when parsing malformed DNSSEC keys. An unauthenticated, remote attacker can exploit this, via a specially crafted query to a zone containing such a key, to cause a validating resolver to exit. (CVE-2015-5722)

- A denial of service vulnerability exists in the fromwire_openpgpkey() function in openpgpkey_61.c that is triggered when the length of data is less than 1. An unauthenticated, remote attacker can exploit this, via a specially crafted response to a query, to cause an assertion failure that terminates named. (CVE-2015-5986)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Upgrade to BIND version 9.9.7-P3 / 9.10.2-P4 or later.

See Also

https://kb.isc.org/article/AA-01287

https://kb.isc.org/article/AA-01291

Plugin Details

Severity: High

ID: 85896

File Name: bind9_9102_p4.nasl

Version: 1.6

Type: remote

Family: DNS

Published: 9/11/2015

Updated: 6/27/2018

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: Low

Score: 3.7

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: E:U/RL:OF/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: 9/2/2015

Vulnerability Publication Date: 8/7/2015

Reference Information

CVE: CVE-2015-5722, CVE-2015-5986