Punycode format text will be displayed for entire qualified international domain names in some instances when a sub-domain triggers the punycode display instead of the primary domain being displayed in native script and the sub-domain only displaying as punycode. This could be used for limited spoofing attacks due to user confusion. This vulnerability affects Firefox < 57.
{
"availability": "No subscription required",
"binaries": [
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"binary_name": "firefox",
"binary_version": "57.0+build4-0ubuntu0.14.04.4"
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"binary_name": "firefox-testsuite",
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{
"availability": "No subscription required",
"binaries": [
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"binary_name": "firefox-testsuite",
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{
"availability": "No subscription required",
"binaries": [
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"binary_name": "firefox",
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"binary_name": "firefox-dev",
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"binary_name": "firefox-testsuite",
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