In specific HSTS configurations an attacker could have bypassed HSTS on a subdomain. This vulnerability affects Firefox < 122, Firefox ESR < 115.7, and Thunderbird < 115.7.
[
{
"product": "Firefox",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "122",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Firefox ESR",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "115.7",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
},
{
"product": "Thunderbird",
"vendor": "Mozilla",
"versions": [
{
"lessThan": "115.7",
"status": "affected",
"version": "unspecified",
"versionType": "custom"
}
]
}
]
bugzilla.mozilla.org/show_bug.cgi?id=1870262
lists.debian.org/debian-lts-announce/2024/01/msg00015.html
lists.debian.org/debian-lts-announce/2024/01/msg00022.html
www.mozilla.org/security/advisories/mfsa2024-01/
www.mozilla.org/security/advisories/mfsa2024-02/
www.mozilla.org/security/advisories/mfsa2024-04/