diff options
Diffstat (limited to 'Lib/urllib2.py')
| -rw-r--r-- | Lib/urllib2.py | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Lib/urllib2.py b/Lib/urllib2.py index ca74c9f..2c1c0c5 100644 --- a/Lib/urllib2.py +++ b/Lib/urllib2.py @@ -578,6 +578,17 @@ class HTTPRedirectHandler(BaseHandler): newurl = urlparse.urljoin(req.get_full_url(), newurl) + # For security reasons we do not allow redirects to protocols + # other than HTTP, HTTPS or FTP. + newurl_lower = newurl.lower() + if not (newurl_lower.startswith('http://') or + newurl_lower.startswith('https://') or + newurl_lower.startswith('ftp://')): + raise HTTPError(newurl, code, + msg + " - Redirection to url '%s' is not allowed" % + newurl, + headers, fp) + # XXX Probably want to forget about the state of the current # request, although that might interact poorly with other # handlers that also use handler-specific request attributes |