The Shadowserver Foundation

Open DB2 Discovery Service Scanning Project

If you are looking at this page, then more than likely, you noticed a scan coming from this server across your network and/or poking at the DB2 Discovery Service on port 523/udp.

The Shadowserver Foundation is currently undertaking a project to search for publicly accessible devices that have the DB2 Discovery Service running. The goal of this project is to identify openly accessible systems that have the DB2 Discovery Service running and report them back to the network owners for remediation.

In addition to possibly making sensitive information available, these devices have the potential to be used in UDP amplification attacks and if at all possible, we would like to see these services made un-available to miscreants that would misuse these resources.

Servers that are configured this way have been incorporated into our reports and are being reported on a daily basis.

Information on UDP-based amplification attacks in general can be found in US-CERT alert TA14-017A at: https://www.us-cert.gov/ncas/alerts/TA14-017A

Methodology

We are querying all computers with routable IPv4 addresses that are not firewalled from the internet on port 523/udp with a request for information about the DB2 server and capturing the response. We intend no harm, but if we are causing problems, please contact us at: dnsscan [at] shadowserver [dot] org.

If you would like to test your own device to see if it has the DB2 Discovery Service accessible, try using the nmap command: "nmap -sU -p 523 --script db2-discover [IP]" and look for the response.

Whitelisting

To be removed from this set of scanning you will need to send an email to dnsscan [at] shadowserver [dot] org with the specific CIDR's that you would like to have removed. You will have to be the verifiable owner of these CIDR's and be able to prove that fact. Any address space that is whitelisted will be publicly available here: https://db2scan.shadowserver.org/exclude.html

Useful Links

Scan Status

Statistics on current run

Other Statistics


All devices with the DB2 Discovery Service Accessible

All db2

(Click image to enlarge)

These are the 2,500 devices with DB2 accessible

If you would like to see more regions click here

All devices with the DB2 Discovery Service Accessible

All db2

(Click image to enlarge)

These are the 2,500 devices with DB2 accessible



If you would like us to not scan your network, please let us know and we will remove your networks from the scan.

Likewise, if you have anymore questions please feel free to send us an email at: gro [tod] revfooreswodahs [ta] nacbarssnd

The Shadowserver Foundation