ISC BIND Zone Update Vulnerability (cve-2020-8624)

medium Nessus Plugin ID 139911

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Synopsis

The remote name server is affected by a vulnerability.

Description

ISC BIND versions 9.9.12 to 9.9.13, 9.10.7 to 9.10.8, 9.11.3 to 9.11.21, 9.12.1 to 9.16.5, 9.17.0 to 9.17.3 as well as 9.9.12-S1 to 9.9.13-S1, 9.11.3-S1 to 9.11.21-S1 of the BIND 9 Supported Preview Edition are affected by a vulnerability.
An authenticated, remote attacker who has been granted privileges to change a specific subset of the zone's content can exploit this to update other contents of the zone. This is because 'update-policy' rules of the type 'subdomain' were inadvertently treated as if they were of type 'zonesub'.

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

Solution

Upgrade to ISC BIND whichever of the following versions is most closely related to your current version of BIND:
9.11.22, 9.16.6, 9.17.4, or 9.11.22-S1 for BIND Supported Preview Edition

See Also

https://kb.isc.org/docs/cve-2020-8624

Plugin Details

Severity: Medium

ID: 139911

File Name: bind9_9174.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 8/27/2020

Updated: 6/3/2021

Dependencies: bind_version.nasl

Risk Information

CVSS Score Source: CVE-2020-8624

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

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

CVSS v3

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.8

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

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

Vulnerability Information

CPE: cpe:/a:isc:bind

Required KB Items: bind/version

Exploit Ease: No known exploits are available

Patch Publication Date: 8/20/2020

Vulnerability Publication Date: 8/20/2020

Reference Information

CVE: CVE-2020-8624

IAVA: 2020-A-0385-S