Domain Spoofing Vulnerability in Firefox < 57: Arabic and Indic Vowel Marker Characters Combined with Latin Characters

Domain Spoofing Vulnerability in Firefox < 57: Arabic and Indic Vowel Marker Characters Combined with Latin Characters

CVE-2017-7833 · MEDIUM Severity

AV:N/AC:L/AU:N/C:N/I:P/A:N

Some Arabic and Indic vowel marker characters can be combined with Latin characters in a domain name to eclipse the non-Latin character with some font sets on the addressbar. The non-Latin character will not be visible to most viewers. This allows for domain spoofing attacks because these combined domain names do not display as punycode. This vulnerability affects Firefox < 57.

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