[Koha-bugs] [Bug 33675] Add CSRF protection to OAuth/OIDC authentication

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=33675

David Cook <dcook at prosentient.com.au> changed:

           What    |Removed                     |Added
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 Attachment #151019|0                           |1
        is obsolete|                            |

--- Comment #6 from David Cook <dcook at prosentient.com.au> ---
Created attachment 151036
  -->
https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=151036&action=edit
Bug 33675: Add CSRF protection to OAuth/OIDC authentication

This patch makes the OAuth/OIDC client pass a `state` parameter with a
CSRF protection token, to be validated back when the flow returns to
Koha.

Ideally, the Mojolicious::Plugin::OAuth2 library should deal with this
implicitly, probably making use of JWT. But as of now, this is the best
way to implement it.

To test:
1. Have a working SSO solution (ktd --sso)
2. Click to login using SSO
=> SUCCESS: Notice a 'state' parameter on the URL, looks like a random
thing
3. When you login, no error is reported

Signed-off-by: David Cook <dcook at prosentient.com.au>

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