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CVE-2009-3602Date: (C)2009-10-13   (M)2023-12-22


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.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V2 Severity:
CVSS Score : 7.5
Exploit Score: 10.0
Impact Score: 6.4
 
CVSS V2 Metrics:
Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality: PARTIAL
Integrity: PARTIAL
Availability: PARTIAL
  
Reference:
SECUNIA-36996
SECUNIA-37913
OSVDB-58836
ADV-2009-2875
DSA-1963
http://unbound.net/pipermail/unbound-users/2009-October/000852.html
http://www.openwall.com/lists/oss-security/2009/10/09/2
http://www.openwall.com/lists/oss-security/2009/10/09/3
unbound-nsec3-security-bypass(53729)

CPE    1
cpe:/a:nlnetlabs:unbound
CWE    1
CWE-310
OVAL    2
oval:org.mitre.oval:def:7571
oval:org.secpod.oval:def:600257

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