If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. Note: users need to update to macOS 10.14.5 in order to take advantage of this change.. This vulnerability affects Thunderbird < 60.7, Firefox < 67, and Firefox ESR < 60.7.
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-9815.json"
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "67.0"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "60.7"
}
]
},
{
"events": [
{
"introduced": "0"
},
{
"fixed": "60.7"
}
]
}
]