Home/CVE/Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secur
CVE

CVE-2009-3602

Unbound before 1.3.4 does not properly verify signatures for NSEC3 records, which allows remote attackers to cause secur

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.

HIGH · CVSS 7.5 EPSS 0.01644
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
▤

Affected Products & Versions

2
nlnetlabs unbound<= 1.3.3
nlnetlabs unboundall versions
▣

Scoring & Timeline

7.5
HIGH · CVSS v2 (legacy) · secalert@redhat.com
View on NVD
This CVE predates CVSS v3; the legacy v2 score is shown so triage still has a severity to work with.
v2 Vector
AV:N/AC:L/Au:N/C:P/I:P/A:P
Published to NVD13 Oct 2009 · 10:30 AM
🔗

References & Sources

9
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://osvdb.org/58836
http://secunia.com/advisories/36996Vendor Advisory
http://secunia.com/advisories/37913
http://unbound.net/pipermail/unbound-users/2009-October/000852.htmlVendor Advisory
http://www.debian.org/security/2009/dsa-1963
http://www.openwall.com/lists/oss-security/2009/10/09/2
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