Debian DSA-3904-1 : bind9 - security update

medium Nessus Plugin ID 101322

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Synopsis

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

Description

Clement Berthaux from Synaktiv discovered two vulnerabilities in BIND, a DNS server implementation. They allow an attacker to bypass TSIG authentication by sending crafted DNS packets to a server.

- CVE-2017-3142 An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name may be able to circumvent TSIG authentication of AXFR requests via a carefully constructed request packet. A server that relies solely on TSIG keys for protection with no other ACL protection could be manipulated into :

- providing an AXFR of a zone to an unauthorized recipient
- accepting bogus NOTIFY packets

- CVE-2017-3143 An attacker who is able to send and receive messages to an authoritative DNS server and who has knowledge of a valid TSIG key name for the zone and service being targeted may be able to manipulate BIND into accepting an unauthorized dynamic update.

Solution

Upgrade the bind9 packages.

For the oldstable distribution (jessie), these problems have been fixed in version 1:9.9.5.dfsg-9+deb8u12.

For the stable distribution (stretch), these problems have been fixed in version 1:9.10.3.dfsg.P4-12.3+deb9u1.

Plugin Details

Severity: Medium

ID: 101322

File Name: debian_DSA-3904.nasl

Version: 3.11

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 7/10/2017

Updated: 1/4/2021

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:8.0, 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: 7/8/2017

Vulnerability Publication Date: 1/16/2019

Reference Information

CVE: CVE-2017-3142, CVE-2017-3143

DSA: 3904

Detections

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