diff options
| -rwxr-xr-x | youtube_dl/YoutubeDL.py | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/youtube_dl/YoutubeDL.py b/youtube_dl/YoutubeDL.py index e8ce58604..ccad5f2ea 100755 --- a/youtube_dl/YoutubeDL.py +++ b/youtube_dl/YoutubeDL.py @@ -1986,14 +1986,19 @@ class YoutubeDL(object): https_handler = make_HTTPS_handler(self.params, debuglevel=debuglevel) ydlh = YoutubeDLHandler(self.params, debuglevel=debuglevel) data_handler = compat_urllib_request_DataHandler() - unknown_handler = compat_urllib_request.UnknownHandler() - handlers = (proxy_handler, https_handler, cookie_processor, ydlh, data_handler, unknown_handler) - # we don't use build_opener because it automatically adds FileHandler, - # which can be used for malicious purposes (see + + # When passing our own FileHandler instance, build_opener won't add the + # default FileHandler and allows us to disable the file protocol, which + # can be used for malicious purposes (see # https://github.com/rg3/youtube-dl/issues/8227) - opener = compat_urllib_request.OpenerDirector() - for handler in handlers: - opener.add_handler(handler) + file_handler = compat_urllib_request.FileHandler() + + def file_open(*args, **kwargs): + raise compat_urllib_error.URLError('file protocol is disabled') + file_handler.file_open = file_open + + opener = compat_urllib_request.build_opener( + proxy_handler, https_handler, cookie_processor, ydlh, data_handler, file_handler) # Delete the default user-agent header, which would otherwise apply in # cases where our custom HTTP handler doesn't come into play |