Debian DSA-3420-1 : bind9 - security update

Medium Nessus Plugin ID 87384

Synopsis

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

Description

It was discovered that the BIND DNS server does not properly handle the parsing of incoming responses, allowing some records with an incorrect class to be accepted by BIND instead of being rejected as malformed. This can trigger a REQUIRE assertion failure when those records are subsequently cached. A remote attacker can exploit this flaw to cause a denial of service against servers performing recursive queries.

Solution

Upgrade the bind9 packages.

For the oldstable distribution (wheezy), this problem has been fixed in version 1:9.8.4.dfsg.P1-6+nmu2+deb7u8.

For the stable distribution (jessie), this problem has been fixed in version 1:9.9.5.dfsg-9+deb8u4.

See Also

https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=808081

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

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

https://www.debian.org/security/2015/dsa-3420

Plugin Details

Severity: Medium

ID: 87384

File Name: debian_DSA-3420.nasl

Version: 2.8

Type: local

Agent: unix

Published: 2015/12/16

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:7.0, 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: 2015/12/15

Reference Information

CVE: CVE-2015-8000

DSA: 3420