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FreeBSD : BIND -- Remote Denial of Service vulnerability (f00d1873-b138-11ea-8659-901b0ef719ab)

medium Nessus Plugin ID 137692

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

ISC reports :

The asterisk character ('*') is allowed in DNS zone files, where it is most commonly present as a wildcard at a terminal node of the Domain Name System graph. However, the RFCs do not require and BIND does not enforce that an asterisk character be present only at a terminal node.

A problem can occur when an asterisk is present in an empty non-terminal location within the DNS graph. If such a node exists, after a series of queries, named can reach an inconsistent state that results in the failure of an assertion check in rbtdb.c, followed by the program exiting due to the assertion failure.

Solution

Update the affected packages.

See Also

https://kb.isc.org/docs/cve-2020-8619

http://www.nessus.org/u?50e0b9e6

Plugin Details

Severity: Medium

ID: 137692

File Name: freebsd_pkg_f00d1873b13811ea8659901b0ef719ab.nasl

Version: 1.5

Type: local

Published: 6/22/2020

Updated: 8/28/2020

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2020-8619

CVSS v3

Risk Factor: Medium

Base Score: 4.9

Temporal Score: 4.3

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

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:bind911, p-cpe:/a:freebsd:freebsd:bind916, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2020

Vulnerability Publication Date: 6/17/2020

Reference Information

CVE: CVE-2020-8619

IAVA: 2020-A-0276-S