ISC BIND Race Condition Vulnerability (CVE-2019-6471)

medium Nessus Plugin ID 126339

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Synopsis

The remote name server is affected by a race condition vulnerability.

Description

According to its self-reported version, the instance of ISC BIND 9 running on the remote name server is between 9.11.0 and 9.11.7, 9.11.3-S1 and 9.11.7-S1, 9.12.0 and 9.12.4-P1, 9.13.x, 9.14.0 and 9.14.3, or 9.15 It is, therefore, affected by a race condition vulnerability, which may cause BIND to exit with an assertion failure when discarding malformed packets.

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 ISC BIND version 9.11.8 / 9.11.8-S1 / 9.12.4-P2 / 9.14.3 / 9.15.1 or later.

See Also

https://kb.isc.org/docs/cve-2019-6471

Plugin Details

Severity: Medium

ID: 126339

File Name: bind9_CVE-2019-6471.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 6/28/2019

Updated: 11/4/2019

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P

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

CVSS Score Source: CVE-2019-6471

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: installed_sw/BIND DNS Server

Exploit Ease: No known exploits are available

Patch Publication Date: 6/19/2018

Vulnerability Publication Date: 6/19/2019

Reference Information

CVE: CVE-2019-6471

BID: 108854