python3: XSS via the server_title field (CVE-2019-16935)
The documentation XML-RPC server in Python through 2.7.16, 3.x through 3.6.9, and 3.7.x through 3.7.4 has XSS via the server_title field. This occurs in Lib/DocXMLRPCServer.py in Python 2.x, and in Lib/xmlrpc/server.py in Python 3.x. If set_server_title is called with untrusted input, arbitrary JavaScript can be delivered to clients that visit the http URL for this server.
References:
Patches:
- https://github.com/python/cpython/commit/39a0c7555530e31c6941a78da19b6a5b61170687
- https://github.com/python/cpython/commit/1698cacfb924d1df452e78d11a4bf81ae7777389