An attacker could, via a specially crafted multipart response, execute arbitrary JavaScript under the resource://devtools origin. This could allow them to access cross-origin JSON content. This access is limited to "same site" documents by the Site Isolation feature on desktop clients, but full cross-origin access is possible on Android versions. This vulnerability affects Firefox < 131, Firefox ESR < 128.3, Firefox ESR < 115.16, Thunderbird < 128.3, and Thunderbird < 131.
{
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"binary_version": "131.0+build1.1-0ubuntu0.20.04.1",
"binary_name": "firefox"
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{
"binary_version": "131.0+build1.1-0ubuntu0.20.04.1",
"binary_name": "firefox-dev"
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{
"binary_version": "131.0+build1.1-0ubuntu0.20.04.1",
"binary_name": "firefox-geckodriver"
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{
"binary_version": "131.0+build1.1-0ubuntu0.20.04.1",
"binary_name": "firefox-mozsymbols"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "thunderbird"
},
{
"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "thunderbird-dev"
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"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "thunderbird-gnome-support"
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"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "thunderbird-mozsymbols"
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"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "xul-ext-calendar-timezones"
},
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"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "xul-ext-gdata-provider"
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{
"binary_version": "1:115.18.0+build1-0ubuntu0.20.04.1",
"binary_name": "xul-ext-lightning"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "thunderbird"
},
{
"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "thunderbird-dev"
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"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "thunderbird-gnome-support"
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"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "thunderbird-mozsymbols"
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"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "xul-ext-calendar-timezones"
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"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "xul-ext-gdata-provider"
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"binary_version": "1:115.18.0+build1-0ubuntu0.22.04.1",
"binary_name": "xul-ext-lightning"
}
],
"availability": "No subscription required"
}