Number of leaking MongoDB databases increasing: Shodan founder

Yesterday’s news about a MongoDB database belonging to MacKeeper (Kromtech) leaking certainly got a lot of media attention. But now do read John Matherly’s comments on Shodan. Matherly, the founder of Shodan, notes that the number of available, unauthenticated instances of MongoDB has actually increased in the past few months. Of note, he explains that increase is occurring despite MongoDB having changed their default settings:


By default, newer versions of MongoDB only listen on localhost. The fact that MongoDB 3.0 is well-represented means that a lot of people are changing the default configuration of MongoDB to something less secure and aren’t enabling any firewall to protect their database. In the previous article, it looked like the misconfiguration problem might solve itself due to the new defaults that MongoDB started shipping with; that doesn’t appear to be the case based on the new information. It could be that users are upgrading their instances but using their existing, insecure configuration files.

Significantly, he notes:

Finally, I can’t stress enough that this problem is not unique to MongoDB: Redis, CouchDB, Cassandra and Riak are equally impacted by these sorts of misconfigurations.

Read more on Shodan’s blog.

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