URL Spoofing using LATIN SMALL LETTER L WITH STROKE ( ł )
Categories
(Firefox :: Untriaged, defect)
Tracking
()
People
(Reporter: rayyanh12, Unassigned)
Details
Attachments
(3 files)
User Agent: Mozilla/5.0 (Windows NT 6.1; rv:74.0) Gecko/20100101 Firefox/74.0
Steps to reproduce:
Go to https://googłe.com/
Actual results:
It showed the URL https://googłe.com/ spoofing URL of google.com
Expected results:
it should be converted into punnycode.
Comment 1•5 years ago
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I don't believe this is considered a "confusable" form. Subtle, yes, but a clearly visible difference.
Chrome has a trick where they compare the general "shape" of the word to the most popular X thousand domains and give a warning if it comes up close-ish. We have talked about doing that, but short of that kind of thing this slashed l is a perfectly legit letter in the latin script -- and heavily used in some locales.
Jonanthan: did we ever file a bug on doing the google thing? If so this could be a dupe of that. I don't think we could just declare this letter confusable on it's own -- the Poles would revolt.
Hi, this bug is only on Desktop version. iOS version does not have this bug.
Comment 3•5 years ago
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(In reply to Daniel Veditz [:dveditz] from comment #1)
I don't believe this is considered a "confusable" form. Subtle, yes, but a clearly visible difference.
Right, this is not reałły any more "confusabłe" than things łike https://goog1e.com.
Chrome has a trick where they compare the general "shape" of the word to the most popular X thousand domains and give a warning if it comes up close-ish. We have talked about doing that, but short of that kind of thing this slashed l is a perfectly legit letter in the latin script -- and heavily used in some locales.
Jonanthan: did we ever file a bug on doing the google thing? If so this could be a dupe of that. I don't think we could just declare this letter confusable on it's own -- the Poles would revolt.
You mean the Połes, right? :)
Yes, we have bug 1507582 on fiłe ałready.
Comment 4•5 years ago
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(In reply to Anonymous from comment #2)
Created attachment 9134476 [details]
823698B7-FF33-48CC-83DC-CCE9B408B0EF.pngHi, this bug is only on Desktop version. iOS version does not have this bug.
That seems surprising, and I'd be inclined to say it's a bug in the iOS version; there's no reason (based on current criteria) for this domain to be displayed as punycode.
How about this URL? http://gmaīl.com/ - This looks quite decieving to users in omnibox.
Okay, I see, you guys haven't fix https://www.аррӏе.com/ ( https://www.xn--80ak6aa92e.com/ )too - iOS version doesn't have these kind of bugs. Why don't you guys implement the same behavior?
Comment 7•5 years ago
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And how about https://gmaíl.com and https://gmaìl.com and https://gmạil.com and so on? Fortunately, SafeBrowsing is pretty good at flagging things like this when they're actually used with malicious intent. But the browser can't just outlaw accented letters in URLs without breaking the user experience for lots of non-English sites and users. It's the World Wide Web, not the Web For English Speakers.
Again, if we implement bug 1507582 it will mitigate some of these examples, but this is fundamentally not a browser bug, it's an issue that needs to be managed by registrars, services like SafeBrowsing, and users: there will always be URLs that are look just slightly different and might deceive an inattentive user. Would-be phishing sites don't even need to use tiny diacritics, many people don't notice "obvious" mispellings. (Like that one!) Imagine there's a legitimate hotel-booking site at https://accommodation.com/ ... many people could easily be taken in by a spoof at https://accomodation.com/.
Comment 8•5 years ago
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(In reply to Anonymous from comment #6)
Okay, I see, you guys haven't fix https://www.аррӏе.com/ ( https://www.xn--80ak6aa92e.com/ )too - iOS version doesn't have these kind of bugs. Why don't you guys implement the same behavior?
In general, it seems wrong to favor one script in internationalized domain names and discriminate against others. Why shouldn't a Russian speaker run a site at http://ссср.com/ and have the domain appear properly in browsers, not mangled to http://xn--p1abaa.com/?
Updated•1 years ago
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Description
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