- This is a 'front-port' of the already existing patch on v1.21 and
v1.20, but applied on top of what Gitea has done to rework the LTA
mechanism. Forgejo will stick with the reworked mechanism by the Forgejo
Security team for the time being. The removal of legacy code (AES-GCM) has been
left out.
- The current architecture is inherently insecure, because you can
construct the 'secret' cookie value with values that are available in
the database. Thus provides zero protection when a database is
dumped/leaked.
- This patch implements a new architecture that's inspired from: [Paragonie Initiative](https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence#secure-remember-me-cookies).
- Integration testing is added to ensure the new mechanism works.
- Removes a setting, because it's not used anymore.
(cherry picked from commit e3d6622a63da9c33eed1e3d102cf28a92ff653d6)
(cherry picked from commit fef1a6dac5e25579e42d40209c4cfc06879948b9)
(cherry picked from commit b0c5165145fa52f2f7bbec1f50b308bdf1d20ef3)
(cherry picked from commit 7ad51b9f8d0647eecacd258f6ee26155da3872e1)
(cherry picked from commit 64f053f3834e764112cde26bb0d16c5e88d6b2af)
(cherry picked from commit f5e78e4c204ce50b800645d614218b6b6096eecb)
Conflicts:
services/auth/auth_token_test.go
https://codeberg.org/forgejo/forgejo/pulls/2069
(cherry picked from commit f69fc23d4bbadf388c7857040ee0774b824e418e)
(cherry picked from commit d955ab3ab02cbb7f1245a8cddec426d64d3ac500)
(cherry picked from commit 9220088f902a25c4690bcabf5a40a8d02e784182)
(cherry picked from commit c73ac636962c41c71814c273510146f0533264ab)
(cherry picked from commit 747a176048ea93085b406429db0e25bb21912eda)
Conflicts:
models/user/user.go
routers/web/user/setting/account.go
https://codeberg.org/forgejo/forgejo/pulls/2295
Closes#27455
> The mechanism responsible for long-term authentication (the 'remember
me' cookie) uses a weak construction technique. It will hash the user's
hashed password and the rands value; it will then call the secure cookie
code, which will encrypt the user's name with the computed hash. If one
were able to dump the database, they could extract those two values to
rebuild that cookie and impersonate a user. That vulnerability exists
from the date the dump was obtained until a user changed their password.
>
> To fix this security issue, the cookie could be created and verified
using a different technique such as the one explained at
https://paragonie.com/blog/2015/04/secure-authentication-php-with-long-term-persistence#secure-remember-me-cookies.
The PR removes the now obsolete setting `COOKIE_USERNAME`.
Earl Warren
