Impact
A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process.
TypeError: Cannot read properties of undefined (reading 'handlesUpgrades')
at Server.onWebSocket (build/server.js:515:67)
This impacts all the users of the engine.io package, including those who uses depending packages like socket.io.
Patches
A fix has been released today (2023/05/02): 6.4.2
This bug was introduced in version 5.1.0 and included in version 4.1.0 of the socket.io parent package. Older versions are not impacted.
For socket.io users:
Workarounds
There is no known workaround except upgrading to a safe version.
For more information
If you have any questions or comments about this advisory:
Thanks to Thomas Rinsma from Codean for the responsible disclosure.
References
Impact
A specially crafted HTTP request can trigger an uncaught exception on the Engine.IO server, thus killing the Node.js process.
This impacts all the users of the
engine.iopackage, including those who uses depending packages likesocket.io.Patches
A fix has been released today (2023/05/02): 6.4.2
This bug was introduced in version 5.1.0 and included in version 4.1.0 of the
socket.ioparent package. Older versions are not impacted.For
socket.iousers:engine.ioversion[email protected]~6.4.0npm audit fixshould be sufficient[email protected]~6.2.0[email protected][email protected]~6.1.0[email protected][email protected]~6.0.0[email protected][email protected]~5.2.0[email protected][email protected]~5.1.1[email protected][email protected]~5.0.0[email protected]~4.1.0[email protected]~4.0.0[email protected]~3.6.0[email protected]and below~3.5.0Workarounds
There is no known workaround except upgrading to a safe version.
For more information
If you have any questions or comments about this advisory:
engine.ioThanks to Thomas Rinsma from Codean for the responsible disclosure.
References