Firefox ESR: Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape…
CVE-2019-9812 is fixed in 4 products on 2 platforms, first by firefox 69.0+build2-0ubuntu0.18.04.1, released September 3, 2019. It is not reported as exploited. Patch Radar priority: High.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Mozilla Firefox ESR (en-US) | 78.0esr | Mozilla Firefox ESR (en-US) 78.0esr | Jun 25, 2020 |
| Linux | |||
| firefox · RHEL 8 | 0:68.1.0-1.el8_0 | RHSA-2019:2663 | Sep 4, 2019 |
| firefox · Ubuntu 18.04.6 LTS (bionic) | 69.0+build2-0ubuntu0.18.04.1 | firefox 69.0+build2-0ubuntu0.18.04.1 | Sep 3, 2019 |
| firefox · ol 8 | 0:68.1.0-1.0.1.el8_0 | ELSA-2019-2663 | Sep 6, 2019 |
| firefox-geckodriver · Ubuntu 18.04.6 LTS (bionic) | 69.0+build2-0ubuntu0.18.04.1 | firefox-geckodriver 69.0+build2-0ubuntu0.18.04.1 | Sep 3, 2019 |
| firefox-mozsymbols · Ubuntu 18.04.6 LTS (bionic) | 69.0+build2-0ubuntu0.18.04.1 | firefox-mozsymbols 69.0+build2-0ubuntu0.18.04.1 | Sep 3, 2019 |
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