epriestley 3aa17c7443 Prevent CSRF uploads via /file/dropupload/ ... Summary: We don't currently validate CSRF tokens on this workflow. This allows an attacker to upload arbitrary files on the user's behalf. Although I believe the tight list of servable mime-types means that's more or less the end of the attack, this is still a vulnerability. In the long term, the right solution is probably to pass CSRF tokens on all Ajax requests in an HTTP header (or just a GET param) or something like that. However, this endpoint is unique and this is the quickest and most direct way to close the hole. Test Plan: - Drop-uploaded files to Files, Maniphest, Phriction and Differential. - Modified CSRF vaidator to use __csrf__.'x' and verified uploads and form submissions don't work. Reviewers: andrewjcg, aran, jungejason, tuomaspelkonen, erling Commenters: andrewjcg, pedram CC: aran, epriestley, andrewjcg, pedram Differential Revision: 758		2011-08-16 13:19:10 -07:00
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api	PhabricatorEnv	2011-01-31 11:55:26 -08:00
markup	Prevent CSRF uploads via /file/dropupload/	2011-08-16 13:19:10 -07:00