the TGT crypto algorithm configuration has changed.  We ran into similar
but different issues with our banner environment (currently on 7.2.7 in
prod and 7.3 in dev)
cas.tgc.crypto.alg=A256CBC-HS512 #the new algorithm
cas.tgc.crypto.encryption.key= <can be found in the cas logs on startup>
cas.tgc.crypto.encryption.key-size=512
cas.tgc.crypto.signing.key=512
cas.tgc.crypto.signing.key=<can be found in the cas logs on startup>

We also tried cas.http-web-request.header.xframe-options config, it didn't
have any effect for us, updating the tgc crypto did.

On Tue, Feb 10, 2026 at 11:20 AM Baron Fujimoto <[email protected]> wrote:

> When we attempted to upgrade from CAS 7.0.x to CAS 7.2.x, we ran into a
> problem with some Banner apps we integrate with. This problem is still
> present with CAS 7.3.x, but we are now obligated to upgrade to 7.3 to
> handle the Duo expiring certificate issue.
>
> This is what the Banner side reports when they encounter the problem that
> prevents their authentication:
> =====
> Cookie "" has been rejected as third-party.
> Request to access cookie or storage on "‹URL›" was blocked because we are
> blocking all third-party storage access requests and Enhanced Tracking
> Protection is enabled.
> Cookie "session=e30=; path=/; expires=Mon, 09 Feb 2026 22:28:30 GMT;
> samesite=none; secure; httponly" has been rejected as third-party.
> Cookie "session.sig=9XPs7W8M7hQi-oN3HwGabFRUD5A; path=/; expires=Mon, 09
> Feb 2026 22:28:30 GMT; samesite=none; secure; httponly" has been rejected
> as third-party.
> Cookie "session=e30=; path=/; expires-Mon, 09 Feb 2026 22:28:30 GMT;
> samesite=none; secure; httponly" has been rejected as third-party.
> Cookie "session.sig=9XPs7W8M7hQi-oN3HwGabFRUD5A; path=/; expires=Mon, 09
> Feb 2026 22:28:30 GNT; samesite=none; secure; httponly" has been rejected
> as third-party.
> The loading of "
> https://cas.example.edu/cas/login?service=https%3%2F%2Fbanner.example.edu%3A9000%2FBannerAdmin.ws&2Fi
> spring cas security check" in a frame is denied by "X-Frame-Options"
> directive set to "deny".
> =====
>
> They want us to try setting "X-Frame-Options" SAMEORIGIN to ALWAYS.
>
> Is this even a CAS thing? From what I gather, it's applicable to the web
> server? But we were using the same web server (Tomcat 10.1.x for CAS 7.2,
> and now Tomcat 11.0.x for CAS 7.3), and we don't encounter these issues for
> other apps.
>
> If this is something controlled by CAS after all? If so, can we tweak it
> as requested – preferably just for their service registrations?
>
> Because only these Banner apps suffer from this as far as we know, we were
> inclined to think that the problem is on the application side. But
> ultimately because these apps are so important to the institution, we need
> to find a workaround one way or another.
>
> Any ideas or suggestions would be appreciated.
>
> --
> Baron Fujimoto <[email protected]> ::: UH Information Technology Services
> minutas cantorum, minutas balorum, minutas carboratum descendus pantorum
>
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> <https://groups.google.com/a/apereo.org/d/msgid/cas-user/CAAjLUL1xoLy6jxkayrK8%2B7fyz259OV7W4WUcFYFax2zHZZwgVQ%40mail.gmail.com?utm_medium=email&utm_source=footer>
> .
>


-- 
Erik Mallory

------------------------
"A happy man's paradise is his own good nature." - Edward Abbey

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