In multiple cases browser prompts could have been obscured by popups controlled by content. These could have led to potential user confusion and spoofing attacks. This vulnerability affects Firefox < 113, Firefox ESR < 102.11, and Thunderbird < 102.11.
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"availability": "No subscription required",
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"binary_version": "113.0+build2-0ubuntu0.18.04.1",
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"availability": "No subscription required",
"binaries": [
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"binary_name": "xul-ext-calendar-timezones"
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"binaries": [
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"binary_version": "113.0+build2-0ubuntu0.20.04.1",
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"binary_name": "firefox-mozsymbols"
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"availability": "No subscription required",
"binaries": [
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"binary_name": "thunderbird-mozsymbols"
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"binary_name": "xul-ext-calendar-timezones"
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"binary_name": "xul-ext-gdata-provider"
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"availability": "No subscription required",
"binaries": [
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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"
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}