Closed Bug 1676338 Opened 4 years ago Closed 4 years ago

Image upload fails with corrupted upload in various websites

Categories

(Firefox :: Untriaged, defect)

Firefox 82
defect

Tracking

()

RESOLVED INCOMPLETE

People

(Reporter: marijndejong, Unassigned, NeedInfo)

Details

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(1 file)

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:78.0) Gecko/20100101 Firefox/78.0

Steps to reproduce:

Upload bug exists on (at least 3) websites: www.werkspot.nl, www.marktplaats.nl and www.sinterklaasjournaal.nl . The latter is the easiest to test since it doesn't require an account.

Click the top right "Stuur je tekening naar de burgemeester van Zwalk"
Enter name
Upload photo

Actual results:

Observe the uploaded image is garbled.

Same happens when uploading images to the other two websites mentioned.

Expected results:

Should have uploaded the image correctly and showed the correct preview.

Note, the original image format makes no difference (png, jpg, all fail).
Restarting in Safe Mode makes no difference, disabling tracking protection makes no difference.

Works fine in Chrome / Edge.

Does not appear to be a Sandbox issue since I restarted Firefox with Full Disk Access enabled (as a test).

Flags: needinfo?(ejpbruel)

Workaround: setting privacy.resistFingerprinting to False. (was enabled)

Hey Marjin,
I tried reproducing this issue with http://www.sinterklaasjournaal.nl/ on the latest versions of Firefox Nightly 84.0a1 (2020-11-16), beta 83.0 and release 82.0.3 but the file was uploaded without issues.

Can you test the issue while in Safe Mode? You can find helpful info here : https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode .
Also a fresh new profile could help. You can find more about creating a new profile here : https://support.mozilla.org/en-US/kb/troubleshoot-and-diagnose-firefox-problems#w_6-create-a-new-firefox-profile .
If possible, you can test this issue on the nightly build as well. Download the build from : https://www.mozilla.org/en-US/firefox/nightly/all/ .

Flags: needinfo?(marijndejong)

Marking this as Resolved > Incomplete due to reporter's lack of response.
If the issue reoccurs or still persists feel free to re-open or file a new bug.

Status: UNCONFIRMED → RESOLVED
Closed: 4 years ago
Resolution: --- → INCOMPLETE

(In reply to Andrei Purice from comment #3)

Marking this as Resolved > Incomplete due to reporter's lack of response.
If the issue reoccurs or still persists feel free to re-open or file a new bug.

HI Andrei, it was caused by a manual setting of "setting privacy.resistFingerprinting" to "True", and reverting back to False solved the issue on the websites I had problems with (including eBay-owned www.marktplaats.nl and www.werkspot.nl). I guess all of them depend on Canvas trickery to upload images which is scrambled by Firefox to resist fingerprinting.

Flags: needinfo?(marijndejong)
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