CVE-2009-3602
unbound - DNSSEC validation
EPSS 1.6%
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.
How to fix CVE-2009-3602
To remediate CVE-2009-3602, upgrade the affected package to a fixed version below.
- Debian/unbound—upgrade to 1.3.4-1 or later
- Debian/unbound—upgrade to 1.0.2-1+lenny1 or later
Is CVE-2009-3602 being exploited?
Low — EPSS is 1.6%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 1.3.4-1
- from 0, < 1.0.2-1+lenny1