This week saw news of self-propagating worms in the container landscape to perform unsanctioned computation tasks such as cryptojacking. This blog post is intended for Qualys customers and partners to understand how such container attacks work, provide security best practice recommendations & walkthrough related Qualys product portfolio functionality.

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A vulnerability affecting the official Alpine Docker images version >=3.3 contains a null password for the root user. Due to the nature of this issue, systems deployed using affected versions of the Alpine Linux container that utilize Linux PAM, or some other mechanism that uses the system shadow file as an authentication database, may accept a NULL password for the root user.

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