Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading accounts.firefox.com in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered. This vulnerability affects Firefox ESR < 60.9, Firefox ESR < 68.1, and Firefox < 69.
CPE | Name | Operator | Version |
---|---|---|---|
firefox | lt | 69.0 | |
firefox_esr | lt | 60.9 | |
firefox_esr | ge | 61.0 | |
firefox_esr | lt | 68.1 |