An attacker could use a JavaScript Map/Set timing attack to determine whether an atom is used by another compartment/zone in specific contexts. This could be used to leak information, such as usernames embedded in JavaScript code, across websites. This vulnerability affects Firefox < 50.1, Firefox ESR < 45.6, and Thunderbird < 45.6.
{
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"binary_name": "firefox",
"binary_version": "50.1.0+build2-0ubuntu0.14.04.1"
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"binary_name": "firefox-mozsymbols",
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"binary_name": "firefox-testsuite",
"binary_version": "50.1.0+build2-0ubuntu0.14.04.1"
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"availability": "No subscription required"
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{
"binaries": [
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"binary_name": "thunderbird",
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"binary_version": "1:45.7.0+build1-0ubuntu0.14.04.1"
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"binary_name": "thunderbird-globalmenu",
"binary_version": "1:45.7.0+build1-0ubuntu0.14.04.1"
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"binary_name": "thunderbird-gnome-support",
"binary_version": "1:45.7.0+build1-0ubuntu0.14.04.1"
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"binary_name": "thunderbird-mozsymbols",
"binary_version": "1:45.7.0+build1-0ubuntu0.14.04.1"
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"binary_name": "thunderbird-testsuite",
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"binary_name": "xul-ext-calendar-timezones",
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"binary_name": "xul-ext-gdata-provider",
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"binary_name": "xul-ext-lightning",
"binary_version": "1:45.7.0+build1-0ubuntu0.14.04.1"
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"availability": "No subscription required"
}
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"binary_name": "firefox-globalmenu",
"binary_version": "50.1.0+build2-0ubuntu0.16.04.1"
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"binary_name": "firefox-mozsymbols",
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"binary_name": "firefox-testsuite",
"binary_version": "50.1.0+build2-0ubuntu0.16.04.1"
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"availability": "No subscription required"
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{
"binaries": [
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"binary_name": "thunderbird",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "thunderbird-dev",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "thunderbird-globalmenu",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "thunderbird-gnome-support",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "thunderbird-mozsymbols",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "thunderbird-testsuite",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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"binary_name": "xul-ext-calendar-timezones",
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"binary_name": "xul-ext-gdata-provider",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
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{
"binary_name": "xul-ext-lightning",
"binary_version": "1:45.7.0+build1-0ubuntu0.16.04.1"
}
],
"availability": "No subscription required"
}