Malicious actors have been serving up GandCrab ransomware and a variant of AESDDoS Botnet malware by exploiting a recently patched vulnerability in two "Confluence" team collaboration products from Australia-based Atlassian.

GandCrab is a malicious encryption program that first emerged in early 2018, while the AESDDoS variant is a more versatile program capable of remote code execution, distributed denial of service (DDoS) attacks, cryptocurrency mining and information theft.

The exploited bug, CVE-2019-3396, is a critical vulnerability that was found in the Widget Connector macro component of both the Confluence Server and Data Center products. This macro is designed to allow users to embed other websites' multimedia content into a Confluence page. But the flaw can be used to achieve server-side template injection, path traversal and remote code execution on affected systems.

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