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[Bug 1064353] Re: Flash falls back to rtmp when using rtmps with Intermediate CA


Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: flashplugin-nonfree (Ubuntu)
       Status: New => Confirmed

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  Flash falls back to rtmp when using rtmps with Intermediate CA

Status in “flashplugin-nonfree” package in Ubuntu:

Bug description:
  This is an upstream issue with Flash on Linux. Reporting this to Adobe
  directly on September 24 (Bug 3335863 on https://bugbase.adobe.com/)
  has resulted in no response or acknowledgement.

  This has now been confirmed in both and on

  The full bug is as follows:

  rtmps fails on Linux if using a certificate signed with an
  Intermediate CA, falling back to rtmp if default ports haven't been

  Steps to Reproduce:
  rtmps with proxyType="best" using stunnel with Intermediate Server CA (tested with: StartCom Class 1 Primary Intermediate Server CA) 

  Actual Result:
  - fails with Unknown CA, despite Intermediate CA being in the Server Hello (confirmed with wireshark).

  Expected Result:

  Any Workarounds:
  1. Add Intermediate certificate to the browser's certificate pool.
  2. Use a different Operating System. rtmps (rtmp over tls) works on Windows, I haven't tried other Linux distributions.
  3. Use Google Chrome on Linux (Pepper-based Flash Player - version

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