CVE-2019-11749 : Exploit Details and Defense Strategies
Learn about CVE-2019-11749, a WebRTC flaw in Firefox and Firefox ESR versions prior to 69 and 68.1, allowing unauthorized access to camera information without user prompts.
A security flaw in the WebRTC system allows harmful web content to access the getUserMedia API without triggering prompts, potentially exposing camera information. This vulnerability affects Firefox versions prior to 69 and Firefox ESR versions before 68.1.
Understanding CVE-2019-11749
This CVE involves a vulnerability in the WebRTC system that can be exploited by malicious web content to access camera information without user notification.
What is CVE-2019-11749?
The flaw in WebRTC enables harmful web content to probe the getUserMedia API, revealing camera details without user consent, potentially leading to user identification based on device properties.
The Impact of CVE-2019-11749
The vulnerability allows unauthorized access to camera information, compromising user privacy and potentially enabling user tracking based on device characteristics.
Technical Details of CVE-2019-11749
This section provides detailed technical insights into the CVE.
Vulnerability Description
The flaw in WebRTC permits harmful web content to access the getUserMedia API, exposing camera details without user interaction, potentially compromising user privacy.
Affected Systems and Versions
- Product: Firefox
- Vendor: Mozilla
- Versions Affected: Prior to 69
- Product: Firefox ESR
- Vendor: Mozilla
- Versions Affected: Before 68.1
Exploitation Mechanism
The vulnerability allows harmful web content to utilize probing methods on the getUserMedia API, bypassing user prompts and notifications to access camera information.
Mitigation and Prevention
Protecting systems from CVE-2019-11749 is crucial to maintaining security.
Immediate Steps to Take
- Update Firefox and Firefox ESR to versions 69 and 68.1, respectively, or newer to mitigate the vulnerability.
- Avoid visiting untrusted websites or clicking on suspicious links to minimize exposure to harmful web content.
Long-Term Security Practices
- Regularly update browsers and software to patch known vulnerabilities and enhance security.
- Implement browser extensions or security tools that can help detect and block malicious web content.
Patching and Updates
- Stay informed about security advisories from Mozilla and promptly apply recommended patches to address vulnerabilities.