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: 1.12

Type: local

Agent: unix

Published: 2012/07/31

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: CVSS2#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 Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2012/07/30

Reference Information

CVE: CVE-2012-3817

BID: 54658

DSA: 2517