CVE-2019-11714 : Exploit Details and Defense Strategies

In certain cases, there is a potential risk of a crash that can be exploited due to an issue where Necko in Firefox < 68 could incorrectly access a child on the incorrect thread during UDP connections.

Understanding CVE-2019-11714

Necko can access a child on the wrong thread during UDP connections, resulting in a potentially exploitable crash in some instances. This vulnerability affects Firefox < 68.

What is CVE-2019-11714?

Vulnerability in Necko in Firefox < 68 that allows incorrect access to a child on the wrong thread during UDP connections.

The Impact of CVE-2019-11714

Potential risk of a crash that can be exploited due to the incorrect thread access during UDP connections.

Technical Details of CVE-2019-11714

NeckoChild can trigger a crash when accessed off the main thread.

Vulnerability Description

Necko in Firefox < 68 incorrectly accesses a child on the wrong thread during UDP connections, leading to potential crashes.

Affected Systems and Versions

Product: Firefox
Vendor: Mozilla
Versions Affected: < 68

Exploitation Mechanism

Exploitable by accessing a child on the incorrect thread during UDP connections.

Mitigation and Prevention

Immediate Steps to Take:

Update Firefox to version 68 or higher.
Monitor vendor advisories for patches and updates. Long-Term Security Practices:
Regularly update software to the latest versions.
Implement network security measures to prevent unauthorized access.
Educate users on safe browsing practices.
Employ intrusion detection systems to monitor network traffic.
Utilize firewalls to restrict malicious traffic.
Conduct regular security audits and penetration testing.
Stay informed about the latest cybersecurity threats and vulnerabilities.
Consider implementing a bug bounty program to incentivize reporting of security issues.
Collaborate with cybersecurity experts to enhance overall security posture.
Engage in threat intelligence sharing to stay ahead of emerging threats.

Patching and Updates

Apply patches and updates provided by Mozilla promptly to address the vulnerability.