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.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "57",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]