$50 bounty request: a Chrome log export of the "certificate transparency required" error

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$50USD cash (or whatever you want) award to the first user who can produce a Chrome event log for the following scenario:

  • A website has a Let's Encrypt certificate deployed.
  • The certificate was recently renewed (less than 6 hours ago).
  • Visiting the website in Chrome (a recent version) produces a NET:ERR_CERTIFICATE_TRANSPARENCY_REQUIRED error.
  • Visiting the website in a different (not Chromium-based) browser does not produce an equivalent error.

You must send a Chrome Network Log which includes the visit to the website.

To create the network log:

  1. Close Chrome.
  2. Open Chrome (preferably with the --bwsi flag to not load extensions/sync etc). Make sure no tabs are open.
  3. Open chrome://net-export/
    a. Select Include raw bytes (will include cookies and credentials).
    b. Press Start Logging to Disk.
  4. Visit the website in a new tab and verify that the ERR_CERTIFICATE_TRANSPARENCY_REQUIRED error is produced.
  5. Go back to the net-export tab and stop logging.
  6. Send me the produced chrome-net-export-log.json by private message here or email me az at letsdebug.net (pgp key if you want to encrypt).



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