A type check was missing when handling fonts in PDF.js, which would allow arbitrary JavaScript execution in the PDF.js context. This vulnerability affects Firefox < 126, Firefox ESR < 115.11, and Thunderbird < 115.11.
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "firefox",
"binary_version": "126.0+build2-0ubuntu0.20.04.1"
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{
"binary_name": "firefox-mozsymbols",
"binary_version": "126.0+build2-0ubuntu0.20.04.1"
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}{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "thunderbird",
"binary_version": "1:115.11.0+build2-0ubuntu0.20.04.1"
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"binary_name": "thunderbird-gnome-support",
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"binary_name": "thunderbird-mozsymbols",
"binary_version": "1:115.11.0+build2-0ubuntu0.20.04.1"
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{
"binary_name": "xul-ext-calendar-timezones",
"binary_version": "1:115.11.0+build2-0ubuntu0.20.04.1"
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"binary_name": "xul-ext-gdata-provider",
"binary_version": "1:115.11.0+build2-0ubuntu0.20.04.1"
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"binary_name": "xul-ext-lightning",
"binary_version": "1:115.11.0+build2-0ubuntu0.20.04.1"
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"availability": "No subscription required",
"binaries": [
{
"binary_name": "thunderbird",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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"binary_name": "thunderbird-dev",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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"binary_name": "thunderbird-gnome-support",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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"binary_name": "thunderbird-mozsymbols",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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{
"binary_name": "xul-ext-calendar-timezones",
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"binary_name": "xul-ext-gdata-provider",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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"binary_name": "xul-ext-lightning",
"binary_version": "1:115.11.0+build2-0ubuntu0.22.04.1"
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}