Given a compromised sandboxed content process due to a separate vulnerability, it is…
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Partial Red Hat: 14 fixed, 1 without a fix
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
Remediation
- Fix · CNA Firefox ESR (Mozilla) Fixed in 60.9
- Fix · CNA Firefox ESR (Mozilla) Fixed in 68.1
- Fix · CNA Firefox (Mozilla) Fixed in 69
Red Hat 3 advisories
- RHSA-2019:2694 Released 2019-09-12 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Desktop (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux Desktop Optional (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux HPC Node Optional (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux Server (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux Server Optional (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux Workstation (v. 6) firefox-60.9.0-1.el6_10
- Red Hat Enterprise Linux Workstation Optional (v. 6) firefox-60.9.0-1.el6_10
- RHSA-2019:2729 Released 2019-09-12 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux Client (v. 7) firefox-60.9.0-1.el7_7
- Red Hat Enterprise Linux Client Optional (v. 7) firefox-60.9.0-1.el7_7
- Red Hat Enterprise Linux Server (v. 7) firefox-60.9.0-1.el7_7
- Red Hat Enterprise Linux Server Optional (v. 7) firefox-60.9.0-1.el7_7
- Red Hat Enterprise Linux Workstation (v. 7) firefox-60.9.0-1.el7_7
- Red Hat Enterprise Linux Workstation Optional (v. 7) firefox-60.9.0-1.el7_7
- RHSA-2019:2663 Released 2019-09-04 · Red Hat rating Importantfirefox security update
- Red Hat Enterprise Linux AppStream (v. 8) firefox-68.1.0-1.el8_0
Vendor assessments
Red Hat
Red Hat rating: Important. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 5 | Affected | No fix planned: Out of support scope |
| Red Hat Enterprise Linux AppStream (v. 8) | Fixed | RHSA-2019:2663 |
| Red Hat Enterprise Linux Client (v. 7) | Fixed | RHSA-2019:2729 |
| Red Hat Enterprise Linux Client Optional (v. 7) | Fixed | RHSA-2019:2729 |
| Red Hat Enterprise Linux Desktop (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Desktop Optional (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux HPC Node Optional (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Server (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Server (v. 7) | Fixed | RHSA-2019:2729 |
| Red Hat Enterprise Linux Server Optional (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Server Optional (v. 7) | Fixed | RHSA-2019:2729 |
| Red Hat Enterprise Linux Workstation (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Workstation (v. 7) | Fixed | RHSA-2019:2729 |
| Red Hat Enterprise Linux Workstation Optional (v. 6) | Fixed | RHSA-2019:2694 |
| Red Hat Enterprise Linux Workstation Optional (v. 7) | Fixed | RHSA-2019:2729 |
Timeline
- 2026-10-02 Threatist record created from CVE-2019-9812
- 2026-10-03 Alias added: GHSA-jh9w-r6qf-jxc5
References
More Mozilla Firefox vulnerabilities
- TI-2024-08981 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.8
- TI-2022-09832 Use after free in Mozilla Firefox KEVCVSS 3.1CRITICAL 9.6
- TI-2019-08769 Improper input validation in Mozilla Firefox ESR KEVCVSS 3.1CRITICAL 10.0
- TI-2010-03577 Mozilla Firefox 3.5.x through 3.5.14 and 3.6.x through 3.6.11, Thunderbird 3.1.6 before… KEVCVSS 3.1CRITICAL 9.8
- TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
- TI-2023-04477 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2019-9812 · CVE Program
- CVE-2019-9812 · NVD
- FIRST EPSS
- GHSA-jh9w-r6qf-jxc5 · GitHub Advisory Database · CC BY 4.0
- CVE-2019-9812 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences