Debian DSA-2517-1 : bind9 - denial of service

high Nessus Plugin ID 60156

Synopsis

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

Description

Einar Lonn discovered that under certain conditions bind9, a DNS server, may use cached data before initialization. As a result, an attacker can trigger an assertion failure on servers under high query load that do DNSSEC validation.

Solution

Upgrade the bind9 packages.

For the stable distribution (squeeze), this problem has been fixed in version 1:9.7.3.dfsg-1~squeeze6.

See Also

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

https://www.debian.org/security/2012/dsa-2517

Plugin Details

Severity: High

ID: 60156

File Name: debian_DSA-2517.nasl

Version: 1.13

Type: local

Agent: unix

Published: 7/31/2012

Updated: 1/11/2021

Supported Sensors: Frictionless Assessment Agent, Nessus Agent

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:6.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 7/30/2012

Reference Information

CVE: CVE-2012-3817

BID: 54658

DSA: 2517