Sliver vulnerabilities

Sliver before version 1.7.4 has a vulnerability where a single click on a malicious link gives an unauthenticated attacker immediate control over all active C2 sessions and beacons via the operator's browser, enabling data exfiltration or infrastructure destruction.

Sliver is a command and control framework that uses a custom Wireguard netstack. In versions 1.5.43 and earlier, and in development version 1.6.0-dev, the netstack does not limit traffic between Wireguard clients. This allows clients to communicate with each other unrestrictedly, potentially enabling leaked or recovered keypairs to be used to attack operators or allowing port forwardings to be accessible from other implants.

Sliver from versions 1.5.x to 1.5.39 has an improper cryptographic implementation, allowing attackers to execute a man-in-the-middle attack via intercepted and crafted responses.