AIX bind Advisory : bind_advisory13.asc (IV89828) (IV89829) (IV89830) (IV89831) (IV90056)

High Nessus Plugin ID 102125

Synopsis

The remote AIX host has a version of bind installed that is affected by multiple denial of service vulnerabilities.

Description

The version of bind installed on the remote AIX host is affected by the following vulnerabilities :

- A denial of service vulnerability exists due to an error in the lightweight resolver (lwres) protocol implementation when resolving a query name that, when combined with a search list entry, exceeds the maximum allowable length. An unauthenticated, remote attacker can exploit this to cause a segmentation fault, resulting in a denial of service condition. This issue occurs when lwresd or the the named 'lwres' option is enabled. (CVE-2016-2775)

- A denial of service vulnerability exists 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.
(CVE-2016-2776)

Solution

A fix is available and can be downloaded from the IBM AIX website.

See Also

http://aix.software.ibm.com/aix/efixes/security/bind_advisory13.asc

Plugin Details

Severity: High

ID: 102125

File Name: aix_bind_advisory13.nasl

Version: 3.7

Type: local

Published: 2017/08/03

Modified: 2018/06/29

Dependencies: 12634

Risk Information

Risk Factor: High

CVSSv2

Base Score: 7.8

Temporal Score: 6.1

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

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

CVSSv3

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: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:ibm:aix, cpe:/a:isc:bind

Required KB Items: Host/AIX/lslpp, Host/local_checks_enabled, Host/AIX/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2016/11/18

Vulnerability Publication Date: 2016/07/18

Reference Information

CVE: CVE-2016-2775, CVE-2016-2776

BID: 92037, 93188

EDB-ID: 40453

IAVA: 2017-A-0004