CVE-2009-4008

N/A Unknown

Published: June 02, 2011 Modified: April 29, 2026

Description

Unbound before 1.4.4 does not send responses for signed zones after mishandling an unspecified query, which allows remote attackers to cause a denial of service (DNSSEC outage) via a crafted query.

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packages.debian.org/changelogs/pool/main/u/unbound/unbound_1.4.6-1/changelog

Source: cve@mitre.org

http://unbound.nlnetlabs.nl/downloads/unbound-1.4.4.tar.gz

Source: cve@mitre.org

Patch

http://www.debian.org/security/2011/dsa-2243

Source: cve@mitre.org

http://packages.debian.org/changelogs/pool/main/u/unbound/unbound_1.4.6-1/changelog

Source: af854a3a-2127-422b-91ae-364da2661108

http://unbound.nlnetlabs.nl/downloads/unbound-1.4.4.tar.gz

Source: af854a3a-2127-422b-91ae-364da2661108

Patch

http://www.debian.org/security/2011/dsa-2243

Source: af854a3a-2127-422b-91ae-364da2661108

6 reference(s) from NVD

Quick Stats

CVSS v3 Score

N/A / 10.0

EPSS (Exploit Probability)

2.7%

84th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-399

Affected Vendors

nlnetlabs

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