The function sub_41D354() is used to parse HTTP headers. When handling the 'cookie', it directly copies the header value to 0x589AF8 without checking the string length. This could result in out-of-bound writing.
This allows an unauthorized attacker to perform a DoS attack, and possibly remote code execution.
buf = b'POST / HTTP/1.1\\r\\nContent-length: 1\\r\\nCookie: ' + b'A'*0x500 + b"\\r\\n\\r\\nA"
