ISC BIND 9.16.19 / 9.16.19-S1 / 9.17.16 Assertion Failure (CVE-2021-25218)

high Nessus Plugin ID 152682

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Synopsis

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

Description

The version of ISC BIND installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2021-25218 advisory.

- In BIND 9.16.19, 9.17.16. Also, version 9.16.19-S1 of BIND Supported Preview Edition When a vulnerable version of named receives a query under the circumstances described above, the named process will terminate due to a failed assertion check. The vulnerability affects only BIND 9 releases 9.16.19, 9.17.16, and release 9.16.19-S1 of the BIND Supported Preview Edition. (CVE-2021-25218)

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 version 9.16.20 / 9.17.17 or later.

See Also

https://kb.isc.org/v1/docs/CVE-2021-25218

Plugin Details

Severity: High

ID: 152682

File Name: bind9_91717.nasl

Version: 1.4

Type: remote

Family: DNS

Published: 8/19/2021

Updated: 8/30/2021

Dependencies: bind_version.nasl

Configuration: Enable paranoid mode

Risk Information

CVSS Score Source: CVE-2021-25218

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3

Risk Factor: High

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: 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: 8/18/2021

Vulnerability Publication Date: 8/18/2021

Reference Information

CVE: CVE-2021-25218

IAVA: 2021-A-0391