Debian DSA-4440-1 : bind9 - security update

medium Nessus Plugin ID 124722
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.


The remote Debian host is missing a security-related update.


Multiple vulnerabilities were found in the BIND DNS server :

- CVE-2018-5743 Connection limits were incorrectly enforced.

- CVE-2018-5745 The 'managed-keys' feature was susceptible to denial of service by triggering an assert.

- CVE-2019-6465 ACLs for zone transfers were incorrectly enforced for dynamically loadable zones (DLZs).


Upgrade the bind9 packages.

For the stable distribution (stretch), these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u5.

See Also

Plugin Details

Severity: Medium

ID: 124722

File Name: debian_DSA-4440.nasl

Version: 1.3

Type: local

Agent: unix

Published: 5/10/2019

Updated: 1/21/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2019-6465


Risk Factor: Low

Score: 3.6


Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

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


Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 5/9/2019

Vulnerability Publication Date: 10/9/2019

Reference Information

CVE: CVE-2018-5743, CVE-2018-5745, CVE-2019-6465

DSA: 4440