Debian DSA-1961-1 : bind9 - DNS cache poisoning

low Nessus Plugin ID 44826

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Synopsis

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

Description

Michael Sinatra discovered that the DNS resolver component in BIND does not properly check DNS records contained in additional sections of DNS responses, leading to a cache poisoning vulnerability. This vulnerability is only present in resolvers which have been configured with DNSSEC trust anchors, which is still rare.

Note that this update contains an internal ABI change, which means that all BIND-related packages (bind9, dnsutils and the library packages) must be updated at the same time (preferably using 'apt-get update' and 'apt-get upgrade'). In the unlikely event that you have compiled your own software against libdns, you must recompile this programs, too.

Solution

Upgrade the bind9 packages.

For the old stable distribution (etch), this problem has been fixed in version 9.3.4-2etch6.

For the stable distribution (lenny), this problem has been fixed in version 9.5.1.dfsg.P3-1+lenny1.

See Also

https://www.debian.org/security/2009/dsa-1961

Plugin Details

Severity: Low

ID: 44826

File Name: debian_DSA-1961.nasl

Version: 1.17

Type: local

Agent: unix

Published: 2/24/2010

Updated: 1/4/2021

Dependencies: ssh_get_info.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.4

CVSS v2

Risk Factor: Low

Base Score: 2.6

Temporal Score: 2.3

Vector: AV:N/AC:H/Au:N/C:N/I:P/A:N

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:bind9, cpe:/o:debian:debian_linux:4.0, cpe:/o:debian:debian_linux:5.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/23/2009

Reference Information

CVE: CVE-2009-4022

BID: 37118

CERT: 418861

DSA: 1961