CVE-2019-13611

Open Source Vulnerabilities CVE-2019-13611

An issue was discovered in python-engineio through 3.8.2. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to a server by using a victim's credentials, because the Origin header is not restricted.

Open Source Vulnerabilities GHSA-j3jp-gvr5-7hwq

## WebSocket cross-origin vulnerability ### Impact This is a Cross-Site Request Forgery (CSRF) vulnerability. It affects Socket.IO and Engine.IO web servers that authenticate clients using cookies. ### Patches python-engineio version 3.9.0 patches this vulnerability by adding server-side Origin header checks. ### Workarounds Do not use cookies for client authentication, or else add a CSRF token to the connection URL. ### References https://www.owasp.org/index.php/Cross-Site_Request_Forgery_(CSRF) https://www.christian-schneider.net/CrossSiteWebSocketHijacking.html ### For more information If you have any questions or comments about this advisory: * Open an issue in [python-engineio](http://github.com/miguelgrinberg/python-engineio)

Open Source Vulnerabilities PYSEC-2019-170

An issue was discovered in python-engineio through 3.8.2. There is a Cross-Site WebSocket Hijacking (CSWSH) vulnerability that allows attackers to make WebSocket connections to a server by using a victim's credentials, because the Origin header is not restricted.