Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2009-3602

Severity CVSS v4.0:
Pending analysis
Type:
CWE-310 Cryptographic Issues
Publication date:
13/10/2009
Last modified:
09/04/2025

Description

Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secure delegations to be downgraded via DNS spoofing or other DNS-related attacks in conjunction with crafted delegation responses.

Impact

Vector 2.0
AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Attack Vector (AV): Network
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
7.50
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:nlnetlabs:unbound:*:*:*:*:*:*:*:* 1.3.3 (including)
cpe:2.3:a:nlnetlabs:unbound:0.0:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.1:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.2:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.3:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.4:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.5:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.6:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.7:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.7.1:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.7.2:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.8:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.09:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.10:*:*:*:*:*:*:*
cpe:2.3:a:nlnetlabs:unbound:0.11:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools