# Which Problems Are Solved
If SAML response validation in crewjam/saml fails, a generic
"Authentication failed" error is thrown. This makes it challenging to
determine the actual cause, since there are a variety of reasons
response validation may fail.
# How the Problems Are Solved
Add a log statement if we receive a response validation error from
crewjam/saml that logs the internal `InvalidResponseError.PrivateErr`
error from crewjam/saml to stdout. We continue to return a generic error
message to the client to prevent leaking data.
Verified by running `go test -v ./internal/idp/providers/saml` in
verbose mode, which output the following line for the "response_invalid"
test case:
```
time="2024-10-03T14:53:10+01:00" level=info msg="invalid SAML response details" caller="/Users/sdouglas/Documents/thirdparty-repos/zitadel/internal/idp/providers/saml/session.go:72" error="cannot parse base64: illegal base64 data at input byte 2"
```
# Additional Changes
None
# Additional Context
- closes#8717
---------
Co-authored-by: Stuart Douglas <sdouglas@hopper.com>
# Which Problems Are Solved
If a SAML IdP did not send a `NameID` (even though required by the
specification), ZITADEL would crash.
# How the Problems Are Solved
- Check specifically if the `Subject` and its `NameID` is passed
# Additional Changes
None
# Additional Context
- closes https://github.com/zitadel/zitadel/issues/8654
# Which Problems Are Solved
ZITADEL currently always uses
`urn:oasis:names:tc:SAML:2.0:nameid-format:persistent` in SAML requests,
relying on the IdP to respect that flag and always return a peristent
nameid in order to be able to map the external user with an existing
user (idp link) in ZITADEL.
In case the IdP however returns a
`urn:oasis:names:tc:SAML:2.0:nameid-format:transient` (transient)
nameid, the attribute will differ between each request and it will not
be possible to match existing users.
# How the Problems Are Solved
This PR adds the following two options on SAML IdP:
- **nameIDFormat**: allows to set the nameid-format used in the SAML
Request
- **transientMappingAttributeName**: allows to set an attribute name,
which will be used instead of the nameid itself in case the returned
nameid-format is transient
# Additional Changes
To reduce impact on current installations, the `idp_templates6_saml`
table is altered with the two added columns by a setup job. New
installations will automatically get the table with the two columns
directly.
All idp unit tests are updated to use `expectEventstore` instead of the
deprecated `eventstoreExpect`.
# Additional Context
Closes#7483Closes#7743
---------
Co-authored-by: peintnermax <max@caos.ch>
Co-authored-by: Stefan Benz <46600784+stebenz@users.noreply.github.com>
