Debian DSA-3758-1 : bind9 - security update

Medium Nessus Plugin ID 96460

Synopsis

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

Description

Several denial-of-service vulnerabilities (assertion failures) were discovered in BIND, a DNS server implementation.

- CVE-2016-9131 A crafted upstream response to an ANY query could cause an assertion failure.

- CVE-2016-9147 A crafted upstream response with self-contradicting DNSSEC data could cause an assertion failure.

- CVE-2016-9444 Specially crafted upstream responses with a DS record could cause an assertion failure.

These vulnerabilities predominantly affect DNS servers providing recursive service. Client queries to authoritative-only servers cannot trigger these assertion failures. These vulnerabilities are present whether or not DNSSEC validation is enabled in the server configuration.

Solution

Upgrade the bind9 packages.

For the stable distribution (jessie), these problems have been fixed in version 1:9.9.5.dfsg-9+deb8u9.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851062

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851063

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=851065

https://security-tracker.debian.org/tracker/CVE-2016-9131

https://security-tracker.debian.org/tracker/CVE-2016-9147

https://security-tracker.debian.org/tracker/CVE-2016-9444

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

https://www.debian.org/security/2017/dsa-3758

Plugin Details

Severity: Medium

ID: 96460

File Name: debian_DSA-3758.nasl

Version: 3.7

Type: local

Agent: unix

Published: 2017/01/13

Updated: 2018/11/10

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 5

Temporal Score: 3.7

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

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

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/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:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:8.0

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: 2017/01/11

Reference Information

CVE: CVE-2016-9131, CVE-2016-9147, CVE-2016-9444

DSA: 3758