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epriestley 026ec11b9d Add a rate limit for guessing old passwords when changing passwords
Summary:
Depends on D18904. Ref T13043. If an attacker compromises a victim's session and bypasses their MFA, they can try to guess the user's current account password by making repeated requests to change it: if they guess the right "Old Password", they get a different error than if they don't.

I don't think this is really a very serious concern (the attacker already got a session and MFA, if configured, somehow; many installs don't use passwords anyway) but we get occasional reports about it from HackerOne. Technically, it's better policy to rate limit it, and this should reduce the reports we receive.

Test Plan: Tried to change password over and over again, eventually got rated limited. Used `bin/auth unlimit` to clear the limit, changed password normally without issues.

Reviewers: amckinley

Reviewed By: amckinley

Maniphest Tasks: T13043

Differential Revision: https://secure.phabricator.com/D18906
2018-01-23 13:46:06 -08:00
bin Allow bulk edits to be made silently if you have CLI access 2018-01-19 13:24:54 -08:00
conf Support "ssl.chain" in Aphlict configuration 2016-04-14 10:41:21 -07:00
externals Add profile images to Repositories 2017-06-12 07:51:39 -07:00
resources Remove "passwordHash" and "passwordSalt" from User objects 2018-01-23 13:44:26 -08:00
scripts Remove "set password" from bin/accountadmin and let bin/auth recover recover anyone 2018-01-23 10:58:11 -08:00
src Add a rate limit for guessing old passwords when changing passwords 2018-01-23 13:46:06 -08:00
support Tweak rate limiting point counts for omnipotent users 2017-10-16 06:43:54 -07:00
webroot Respect token limits for "Assign to" and custom datasource fields in Herald 2018-01-22 11:54:12 -08:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Begin adding test coverage to GitHub Events API parsers 2016-03-09 09:30:07 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig Fix text lint issues 2015-02-12 07:00:13 +11:00
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE Fix text lint issues 2015-02-12 07:00:13 +11:00
NOTICE Update Phabricator NOTICE file to reflect modern legal circumstances 2014-06-25 13:42:13 -07:00
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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