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Commit Graph

10 Commits

Author SHA1 Message Date
4e2013e6ba fix: update code_verifier to use recommended method (#2620)
The [RFC](https://datatracker.ietf.org/doc/html/rfc7636#section-4.1)
says that a code verifier just uses unreserved characters, but the
recommended method is that it is a base64-urlencoded 32-octet url. Some
implementations of PKCE (most notably the one used by salesforce)
require that this is a valid base64 encoded string[1], so this patch
switches to using the recommended approach to make it more compatible.

[1]: https://help.salesforce.com/s/articleView?id=sf.remoteaccess_pkce.htm&type=5
2024-11-06 15:16:39 +01:00
d107d885e4 Session-Cookie Support (#1713)
* Create session cookie when cookie-expire set 0

* Fix format

* add test

* fix lint error

* fix test code

* fix conflicted test case

* update test case of cookie expiration

* update tests of csrf cookies

* update docs

* Update docs/docs/configuration/overview.md

Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>

---------

Co-authored-by: tanuki884 <morkazuk@fsi.co.jp>
Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>
2023-08-16 12:23:02 +01:00
311d210ec4 Remove unsupported special characters from the code verifier runes
- Not all special ASCII characters are strictly supported by the spec
2022-12-16 19:57:02 -05:00
f4f5b7756c Fix PKCE code verifier generation to never use UTF-8 characters
- This could result in intermittent/random failures of PKCE enabled IdP's
2022-11-18 20:37:14 -05:00
ce750e9b30 PKCE Support (#1541)
* Add the allowed_email_domains and the allowed_groups on the auth_request endpoint + support standard wildcard char for validation with sub-domain and email-domain.

Signed-off-by: Valentin Pichard <github@w3st.fr>

* Fix provider data initialisation

* PKCE Support

Adds Code Challenge PKCE support (RFC-7636) and partial
Authorization Server Metadata (RFC-8414) for detecting PKCE support.

- Introduces new option `--force-code-challenge-method` to force a
specific code challenge method (either `S256` or `plain`) for instances
when the server has not implemented RFC-8414 in order to detect
PKCE support on the discovery document.
- In all other cases, if the PKCE support can be determined during discovery
then the `code_challenge_methods_supported` is used and S256 is always
preferred.
- The force command line argument is helpful with some providers like Azure
who supports PKCE but does not list it in their discovery document yet.
- Initial thought was given to just always attempt PKCE since according to spec
additional URL parameters should be dropped by servers which implemented
OAuth 2, however other projects found cases in the wild where this causes 500
errors by buggy implementations.
See: https://github.com/spring-projects/spring-security/pull/7804#issuecomment-578323810
- Due to the fact that the `code_verifier` must be saved between the redirect and
callback, sessions are now created when the redirect takes place with `Authenticated: false`.
The session will be recreated and marked as `Authenticated` on callback.
- Individual provider implementations can choose to include or ignore code_challenge
and code_verifier function parameters passed to them

Note: Technically speaking `plain` is not required to be implemented since
oauth2-proxy will always be able to handle S256 and servers MUST implement
S256 support.
> If the client is capable of using "S256", it MUST use "S256", as "S256"
> is Mandatory To Implement (MTI) on the server.  Clients are permitted
> to use "plain" only if they cannot support "S256" for some technical
> reason and know via out-of-band configuration that the server supports
> "plain".
Ref: RFC-7636 Sec 4.2

oauth2-proxy will always use S256 unless the user explicitly forces `plain`.

Fixes #1361

* Address PR comments by moving pkce generation

* Make PKCE opt-in, move to using the Nonce generater for code verifier

* Make PKCE opt-in, move to using the Nonce generater for code verifier

* Encrypt CodeVerifier in CSRF Token instead of Session

- Update Dex for PKCE support
- Expose HTTPBin for further use cases

* Correct the tests

* Move code challenges into extra params

* Correct typo in code challenge method

Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>

* Correct the extra space in docs

Co-authored-by: Joel Speed <Joel.speed@hotmail.co.uk>

* Address changelog and new line nits

* Add generated docs

Co-authored-by: Valentin Pichard <github@w3st.fr>
Co-authored-by: Joel Speed <joel.speed@hotmail.co.uk>
2022-03-13 10:08:33 +00:00
56f199a24f Stop accepting legacy SHA1 signed cookies 2020-09-24 10:31:34 -07:00
1c8c5b08d7 Handle cookie signing errors 2020-08-09 07:55:40 -07:00
65c228394f Address gosec findings
Mostly handling unhandled errors appropriately.
If logging to STDERR fails, we panic. Added #nosec
comments to findings we are OK with.
2020-08-09 07:55:39 -07:00
014fa682be Add EncryptInto/DecryptInto Unit Tests 2020-06-12 14:42:42 -07:00
f60e24d9c3 Split non-cipher code to utils.go out of ciphers.go 2020-06-12 14:36:58 -07:00