Debian DSA-2243-1 : unbound - design flaw

Medium Nessus Plugin ID 55031

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VPR Score: 3.4


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


It was discovered that Unbound, a caching DNS resolver, ceases to provide answers for zones signed using DNSSEC after it has processed a crafted query. (CVE-2009-4008 )

In addition, this update improves the level of DNSSEC support in the lenny version of Unbound so that it is possible for system administrators to configure the trust anchor for the root zone.


Upgrade the unbound packages.

For the oldstable distribution (lenny), this problem has been fixed in version 1.4.6-1~lenny1.

For the other distributions (squeeze, wheezy, sid), this problem has been fixed in version 1.4.4-1.

See Also

Plugin Details

Severity: Medium

ID: 55031

File Name: debian_DSA-2243.nasl

Version: 1.8

Type: local

Agent: unix

Published: 2011/06/10

Updated: 2020/03/12

Dependencies: 12634

Risk Information

Risk Factor: Medium

VPR Score: 3.4

CVSS v2.0

Base Score: 5

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

Vulnerability Information

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

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

Patch Publication Date: 2011/05/27

Reference Information

CVE: CVE-2009-4008

DSA: 2243