Description
Signal K Server is a server application that runs on a central hub in a boat. Versions prior to 2.25.0 are vulnerable to an unauthenticated Regular Expression Denial of Service (ReDoS) attack within the WebSocket subscription handling logic. By injecting unescaped regex metacharacters into the `context` parameter of a stream subscription, an attacker can force the server's Node.js event loop into a catastrophic backtracking loop when evaluating long string identifiers (like the server's self UUID). This results in a total Denial of Service (DoS) where the server CPU spikes to 100% and becomes completely unresponsive to further API or socket requests. Version 2.25.0 contains a fix.
Problem types
CWE-400: Uncontrolled Resource Consumption
CWE-1333: Inefficient Regular Expression Complexity
Product status
References
github.com/...server/security/advisories/GHSA-7gcj-phff-2884
github.com/...server/security/advisories/GHSA-7gcj-phff-2884
github.com/SignalK/signalk-server/pull/2568
github.com/...ommit/215d81eb700d5419c3396a0fbf23f2e246dfac2d
github.com/SignalK/signalk-server/releases/tag/v2.25.0