CVE-2019-9812 : Vulnerability Insights and Analysis
Learn about CVE-2019-9812, a Mozilla Firefox and Firefox ESR vulnerability allowing sandbox escape through Firefox Sync. Find out affected versions and mitigation steps.
A vulnerability in Mozilla Firefox and Firefox ESR versions allows for sandbox escape through Firefox Sync, potentially leading to unauthorized access and compromise of user data.
Understanding CVE-2019-9812
This CVE highlights a security flaw in Firefox and Firefox ESR versions that could be exploited to bypass the sandbox protection mechanism.
What is CVE-2019-9812?
If a sandboxed content process is compromised due to another vulnerability, attackers can bypass the sandbox by coercing a login into a malicious Firefox Sync account, impacting specific versions of Firefox and Firefox ESR.
The Impact of CVE-2019-9812
The vulnerability enables threat actors to escape the sandbox protection, potentially leading to unauthorized access to sensitive information and compromising user data.
Technical Details of CVE-2019-9812
This section delves into the specifics of the vulnerability.
Vulnerability Description
The flaw allows attackers to bypass the sandbox by coercing a login into a malicious Firefox Sync account, leading to the deactivation of sandbox settings.
Affected Systems and Versions
- Firefox ESR versions before 60.9
- Firefox ESR versions before 68.1
- Firefox versions before 69
Exploitation Mechanism
Attackers can compromise a sandboxed content process, access accounts.firefox.com, and force a login into a malicious Firefox Sync account, synchronizing preference settings to disable the sandbox.
Mitigation and Prevention
Protecting systems from CVE-2019-9812 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Firefox and Firefox ESR to versions 60.9, 68.1, or later to mitigate the vulnerability.
- Monitor for any suspicious activities indicating a potential compromise.
Long-Term Security Practices
- Regularly update browsers and software to the latest versions to patch known vulnerabilities.
- Implement strong password policies and multi-factor authentication to enhance account security.
Patching and Updates
- Stay informed about security advisories from Mozilla and apply patches promptly to address known vulnerabilities.