CVE-2009-3602

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.

Category

7.5
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.64% Top 20%
Vendor Advisory debian.org Vendor Advisory secunia.com Vendor Advisory unbound.net Vendor Advisory vupen.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://secunia.com/advisories/37913 third party advisory
http://www.openwall.com/lists/oss-security/2009/10/09/3 mailing list
http://secunia.com/advisories/36996 third party advisory vendor advisory
http://unbound.net/pipermail/unbound-users/2009-October/000852.html mailing list vendor advisory
http://www.vupen.com/english/advisories/2009/2875 vdb entry vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/53729 vdb entry
http://www.openwall.com/lists/oss-security/2009/10/09/2 mailing list
http://osvdb.org/58836 vdb entry
http://www.debian.org/security/2009/dsa-1963 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2009-3602?
CVE-2009-3602 has been scored as a high severity vulnerability.
How to fix CVE-2009-3602?
To fix CVE-2009-3602, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2009-3602 being actively exploited in the wild?
It is possible that CVE-2009-3602 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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