When installing an add-on, Firefox verified the signature before prompting the user; but while the user was confirming the prompt, the underlying add-on file could have been modified and Firefox would not have noticed. This vulnerability affects Firefox < 98, Firefox ESR < 91.7, and Thunderbird < 91.7.
{
"binaries": [
{
"binary_version": "98.0+build3-0ubuntu0.18.04.2",
"binary_name": "firefox"
},
{
"binary_version": "98.0+build3-0ubuntu0.18.04.2",
"binary_name": "firefox-dev"
},
{
"binary_version": "98.0+build3-0ubuntu0.18.04.2",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "98.0+build3-0ubuntu0.18.04.2",
"binary_name": "firefox-mozsymbols"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "thunderbird"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "thunderbird-dev"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "thunderbird-gnome-support"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "thunderbird-mozsymbols"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "xul-ext-calendar-timezones"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "xul-ext-gdata-provider"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.18.04.1",
"binary_name": "xul-ext-lightning"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "98.0+build3-0ubuntu0.20.04.2",
"binary_name": "firefox"
},
{
"binary_version": "98.0+build3-0ubuntu0.20.04.2",
"binary_name": "firefox-dev"
},
{
"binary_version": "98.0+build3-0ubuntu0.20.04.2",
"binary_name": "firefox-geckodriver"
},
{
"binary_version": "98.0+build3-0ubuntu0.20.04.2",
"binary_name": "firefox-mozsymbols"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "thunderbird"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "thunderbird-dev"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "thunderbird-gnome-support"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "thunderbird-mozsymbols"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "xul-ext-calendar-timezones"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "xul-ext-gdata-provider"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu0.20.04.1",
"binary_name": "xul-ext-lightning"
}
],
"availability": "No subscription required"
}{
"binaries": [
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "thunderbird"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "thunderbird-dev"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "thunderbird-gnome-support"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "thunderbird-mozsymbols"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "xul-ext-calendar-timezones"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "xul-ext-gdata-provider"
},
{
"binary_version": "1:91.7.0+build2-0ubuntu1",
"binary_name": "xul-ext-lightning"
}
],
"availability": "No subscription required"
}