1529330 - Getting unicode issue after losing add-ons

Status: RESOLVED DUPLICATE of bug 1529328

(Toolkit :: Blocklist Policy Requests, task)

Description

[Kelimutu [:kiki]]

Attachment: 2019-02-20 23.38.35.jpg

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:65.0) Gecko/20100101 Firefox/65.0

Steps to reproduce:

We were getting some complaints around unicode issues today:

• https://twitter.com/imogenaquilina/status/1098221467312025600
• https://twitter.com/MistaMarcus07/status/1098021600916660225

Users would just go to a random site, and they will get the following error message.

Actual results:

"Error 408: Encoding with UTF-16. Install Firefox addon for unicode support."

One user report that he also lost some add-ons after that.

Expected results:

If it was an add-ons that has been blocked recently, it should only remove the add-ons and Firefox should work normally.

Comment 1

[Kelimutu [:kiki]]

We actually found the workaround for this issue by doing Firefox Refresh from about:support. But it might worth to see if it has something to do with the recent blocking in bug 1528761.

Comment 2

[Gingerbread Man]

(In reply to Kelimutu [:kiki] from comment #0)

• https://twitter.com/MistaMarcus07/status/1098021600916660225

The follow-up says removing a recently added extension solved the issue:
https://twitter.com/MistaMarcus07/status/1098031302459179008

Attachment 9045357 [details] shows https://addons.mozilla.org/firefox/addon/unicode-emoji-display/ which has the title Unicode & Emoji Support on AMO but simply Unicode Support in the doorhanger installation prompt. It's already been blocked a few minutes ago in bug 1529328 so I don't think there's anything left to do here.

Comment 3

[Yofie Setiawan]

Looking at the reviews, many users complaining https://addons.mozilla.org/en-US/firefox/addon/unicode-emoji-display/reviews/

Maybe should take a further action regarding this...

Comment 4

[Kelimutu [:kiki]]

Good to see that it has been blocked. Let's resolve this as per bug 1529328.

Comment 5

[Andreas Wagner [:TheOne] [use NI]]

(In reply to Kelimutu [:kiki] from comment #0)

Actual results:

"Error 408: Encoding with UTF-16. Install Firefox addon for unicode support."

It would be great to know where that error message comes from. Is there a way to find out?

Comment 6

[Kelimutu [:kiki]]

Yofie, can you confirm where did you get the error message?

Comment 7

[Gingerbread Man]

(In reply to Andreas Wagner [:TheOne] [use NI] from comment #5)

It would be great to know where that error message comes from. Is there a way to find out?

Can't AMO admins search the source code of all extensions for that string? One user reported "Google Translate with Right Click" as the offending add-on (bug 1504619), while another mentioned a Gmail notifier add-on but not a specific name.

https://support.mozilla.org/questions/1250853#answer-1198790
https://support.mozilla.org/questions/1250773#answer-1198608

I'll move this to Toolkit :: Blocklist Policy Requests since it seems clear this is caused by the presence of an add-on rather than the absence. The summary should probably also be updated.

Comment 8

[Yofie Setiawan]

(In reply to Kelimutu [:kiki] from comment #6)

Yofie, can you confirm where did you get the error message?

All of a sudden, my firefox browser showing "?" code, replacing most of the texts, and this happen on every websites i opened. So i "refresh firefox" from about:support then i think the bugs or malware is removed... i lost some addons after that, but not sure which addons cause that bug...