A newly discovered and heavily exploited Docker host vulnerability has allowed hundreds of websites to be illegally accessed and injected with a cryptocurrency miner.

The flaw, CVE-2019-5736, allows an attacker to gain host root access from the Docker container through the remote Docker API. Normally, the Docker API allows admins to control a remote Docker host, including automating the deployment process, control and get the state of your containers, but if this is accessed by an attacker a network can be compromised, said Imperva researchers Vitaly Simonovich and Ori Nakar in a new report.

In this case Imperva found the exposed Docker remote API is has been taken advantage of by hundreds of attackers with many using the access to mine Monero while others are running production environments of MySQL database servers, Apache Tomcat, and others.

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