ISC BIND Assertion Failure Vulnerability (DoS)

Medium Nessus Plugin ID 122239

Synopsis

The remote name server is affected by an assertion failure vulnerability.

Description

According to its self-reported version, the instance of ISC BIND 9 running on the remote name server is 9.12.0 or 9.12.1. It is, therefore, affected by an assertion failure vulnerability which exists in the rbtdb.c due to the implementation of the new serve-stale feature and NSEC aggressive negative caching.

An unauthenticated, remote attacker can exploit this to cause undesirable behavior such as recurision looping or excessive logging, resulting in a degradation or denial of service.

Solution

Upgrade to ISC BIND version 9.12.1-P2 or later.

See Also

https://kb.isc.org/docs/AA-01602

Plugin Details

Severity: Medium

ID: 122239

File Name: bind9_CVE-2018-5737.nasl

Version: 1.2

Type: remote

Family: DNS

Published: 2019/02/15

Updated: 2019/10/31

Dependencies: 10028

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS Score Source: CVE-2018-5737

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/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: 2018/05/18

Vulnerability Publication Date: 2018/05/18

Reference Information

CVE: CVE-2018-5737

BID: 104236