Debian DSA-4440-1 : bind9 - security update

medium Nessus Plugin ID 124722

Synopsis

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

Description

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).

Solution

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

https://security-tracker.debian.org/tracker/CVE-2018-5743

https://security-tracker.debian.org/tracker/CVE-2018-5745

https://security-tracker.debian.org/tracker/CVE-2019-6465

https://security-tracker.debian.org/tracker/source-package/bind9

https://packages.debian.org/source/stretch/bind9

https://www.debian.org/security/2019/dsa-4440

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

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Medium

Score: 5.1

CVSS v2

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

CVSS Score Source: CVE-2019-6465

CVSS v3

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