Debian DSA-3904-1 : bind9 - security update

Medium Nessus Plugin ID 101322

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.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=866564

https://security-tracker.debian.org/tracker/CVE-2017-3142

https://security-tracker.debian.org/tracker/CVE-2017-3143

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

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

https://www.debian.org/security/2017/dsa-3904

Plugin Details

Severity: Medium

ID: 101322

File Name: debian_DSA-3904.nasl

Version: 3.10

Type: local

Agent: unix

Published: 2017/07/10

Updated: 2019/02/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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 Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2017/07/08

Vulnerability Publication Date: 2019/01/16

Reference Information

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

DSA: 3904