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Nmap NSE 6.01: dns-random-srcport
Information
Severity
Severity
Medium
Family
Family
Nmap NSE
CVSSv2 Base
CVSSv2 Base
6.4
CVSSv2 Vector
CVSSv2 Vector
AV:N/AC:L/Au:N/C:N/I:P/A:P
Solution Type
Solution Type
Mitigation
Created
Created
11 years ago
Modified
Modified
5 years ago
Summary
Checks a DNS server for the predictable-port recursion vulnerability. Predictable source ports can make a DNS server vulnerable to cache poisoning attacks (see CVE-2008-1447). The script works by querying porttest.dns-oarc.net (see references). Be aware that any targets against which this script is run will be sent to and potentially recorded by one or more DNS servers and the porttest server. In addition your IP address will be sent along with the porttest query to the DNS server running on the target.