GHSA-CX3H-4QPV-8HC9 Tornado has out-of-bounds memory access via C extension

Summary Tornado's optional native extension tornado.speedups implements websocketmask without validating that the mask argument is exactly four bytes long. The C function reads four bytes from mask unconditionally, even when Python passes a shorter byte string. This can read beyond the provided...

Updated python-tornado package fixes security vulnerability

Security fixes CVE-2014-9720 The XSRF token is now encoded with a random mask on each request. This makes it safe to include in compressed pages without being vulnerable to the BREACH attack. This applies to most applications that use both the xsrfcookies and gzip options or have gzip applied by ...