On September 9th, I have discovered three (3) open and unprotected MongoDB instances which appeared to be part of Librería Porrúa, a long-established bookseller based in Mexico.
This case would have been left unnoticed if I did not report the same database caught exposed back in July this year.
New version of the database contained even more records = 1,018,997 (comparing to the same collection with 958,128 records last time), meaning that this production database has been updated since the previous exposure with 60,869 new users.
Similarly to the previous incident, the following information was compromised:
Interestingly, both databases contained the same ransom note which has been seen in the previous incident – asking for 0.05 BTC. This could mean that developers simply migrated the same database to the production servers without cleaning up unnecessary stuff.
I have immediately sent a responsible disclosure note to Librería Porrúa and, surprisingly, on the next day (Sept 12) I heard back from IT manager who secured the database within 24 hours.
Danger of having exposed MongoDB or similar NoSql databases is huge. I have previously reported that the lack of authentication allowed the installation of malware or ransomware on the MongoDB servers. The public configuration allows the possibility of cybercriminals to manage the whole system with full administrative privileges. Once the malware is in place criminals could remotely access the server resources and even launch a code execution to steal or completely destroy any saved data the server contains.
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