"Content-Disposition: attachment"
Summary:
We currently serve some files off the primary domain (with "Content-Disposition:
attachment" + a CSRF check) and some files off the alternate domain (without
either).
This is not sufficient, because some UAs (like the iPad) ignore
"Content-Disposition: attachment". So there's an attack that goes like this:
- Alice uploads xss.html
- Alice says to Bob "hey download this file on your iPad"
- Bob clicks "Download" on Phabricator on his iPad, gets XSS'd.
NOTE: This removes the CSRF check for downloading files. The check is nice to
have but only raises the barrier to entry slightly. Between iPad / sniffing /
flash bytecode attacks, single-domain installs are simply insecure. We could
restore the check at some point in conjunction with a derived authentication
cookie (i.e., a mini-session-token which is only useful for downloading files),
but that's a lot of complexity to drop all at once.
(Because files are now authenticated only by knowing the PHID and secret key,
this also fixes the "no profile pictures in public feed while logged out"
issue.)
Test Plan: Viewed, info'd, and downloaded files
Reviewers: btrahan, arice, alok
Reviewed By: arice
CC: aran, epriestley
Maniphest Tasks: T843
Differential Revision: https://secure.phabricator.com/D1608
Summary:
I locked this down a little bit recently, but make
double-extra-super-sure that we aren't sending the user anywhere suspicious or
open-redirecty. This also locks down protocol-relative URIs (//evil.com/path)
although I don't think any browsers do bad stuff with them in this context, and
header injection URIs (although I don't think any of the modern PHP runtimes are
vulnerable).
Test Plan:
- Ran tests.
- Hit redirect page with valid and invalid next URIs; was punted to / for
invalid ones and to the right place for valid ones.
Reviewers: btrahan, jungejason
Reviewed By: btrahan
CC: arice, aran, epriestley, btrahan
Differential Revision: https://secure.phabricator.com/D1369
Summary:
The correct name of this key is 'github.application-secret', not
'github.secret'. Make DarkConsole check that all the masked keys exist to
prevent this from happening again. This isn't super important since this
is just intended to protected against casual security lapses (taking a
screenshot with DarkCnosole's "Config" tab open, for instance) but it's easy
to check for so it seems worthwhile to get right.
Test Plan:
Loaded page without the actual config file change, got an exception.
Fixed the config, reloaded the page, good news goats (really trying to get this
to catch on since goats are adorable).
Reviewed By: aran
Reviewers: tuomaspelkonen, jungejason, aran
CC: aran
Differential Revision: 189
