Can’t Stop, Won’t Stop Hijacking (CSWSH) WebSockets
Summary
This article discusses the WebSocket Protocol, standardized in 2011, which allows for full-duplex communication between clients and web servers over a single, persistent connection. It highlights a vulnerability related to hijacking these WebSocket connections.
IFF Assessment
The article describes a method for hijacking WebSocket connections, which represents a new attack vector that defenders need to be aware of and mitigate.
Severity
The CVSS score is estimated based on the potential for unauthorized access and data exfiltration via hijacked WebSocket connections, which can impact confidentiality and integrity.
Defender Context
Defenders should be aware of potential vulnerabilities in how WebSocket connections are handled and secured. It's crucial to implement proper authentication, authorization, and encryption for these persistent connections to prevent hijacking and unauthorized data access. Monitoring for unusual WebSocket traffic patterns can also help detect such attacks.