Blank screen is encountered when browsing with CAS configured

• Type: Bug
• Status: Closed
• Resolution: Fixed
• Affects Version/s: 7.0.X, 7.1.X, 7.2.X, Master
• Fix Version/s: 7.0.0 DXP FP93, 7.0.10.14 DXP SP14, 7.0.X, 7.1.10 DXP FP18, 7.1.10.5 SP5, 7.1.X, 7.2.10 DXP FP5, 7.2.10.2 DXP SP2, 7.2.X, 7.3.10 DXP GA1, Master
• Component/s: Application Security > CAS
• Labels:
  • ee-ts
  • liferay-dxp-70-sp14
  • liferay-dxp-71-sp5
  • liferay-dxp-72-sp2
  • liferay-fixpack-de-93-7010
  • liferay-fixpack-dxp-18-7110
  • liferay-fixpack-dxp-5-7210
• Branch Version/s:
  7.2.x, 7.1.x, 7.0.x
• Backported to Branch:
  Committed
• Fix Priority: 4
• Sprint: Iteration 34, Iteration 35
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/87473

Additional Info
This issue is reproduced when an exception is thrown by CAS. 
Also, the user may not be redirected to the proper page when this occurs.

This issue should occur more often when using CAS version 3.x

 

Steps to reproduce - Incorrect Redirect

1. Setup Liferay
2. Create User (cas default user)
   1. Username: foo
   2. Password: foo
3. Assign User: foo
   1. Site: Liferay
   2. Site Role: Site Administrator
4. Setup CAS version 3.x
5. Configure Liferay to enable CAS
6. Login via CAS w/ created default user: foo
7. Navigate to Site (Liferay) > Content & Data > Web Content
8. Click [+] > Basic Web Content
9. Copy URL
10. Logout of Liferay (Confirm successfully logged out via CAS)
11. Navigate to copied URL
12. Login via CAS

Expected Behavior:
User is redirected to the copied URL

Actual Behavior:
A blank white page is shown with no indication of any errors.

---

Steps to reproduce - Simple Blank Page:

1. Setup Liferay with CAS configured
2. Confirm that CAS is configured properly.
3. Try to access this url: http://localhost:8080/c/portal/login?ticket=Madeupticket

Expected Behavior:
An authorization error or some sort of error, would be shown to the user (instead of just a blank white page)

Actual Behavior:
A blank white page is shown with no indication of any errors.