CVE-2018-12391 Explained : Impact and Mitigation

Firefox, Firefox ESR, and Thunderbird versions prior to specified versions are vulnerable to an issue where HTTP Live Stream audio data can be accessed cross-origin on Firefox for Android.

Understanding CVE-2018-12391

This CVE describes a security vulnerability in Firefox, Firefox ESR, and Thunderbird that allows unauthorized access to audio data during HTTP Live Stream playback on Firefox for Android.

What is CVE-2018-12391?

The vulnerability enables the access of audio data from different origins while using Firefox for Android to play HTTP Live Streams.
The issue stems from a flaw in the Android service, allowing unauthorized access to audio data.
Only impacts Firefox for Android, not affecting desktop versions of Firefox.

The Impact of CVE-2018-12391

Attackers can exploit this vulnerability to access audio data from various sources, violating security policies.
This issue poses a risk of unauthorized data access and potential privacy breaches for users of the affected versions.

Technical Details of CVE-2018-12391

Firefox, Firefox ESR, and Thunderbird versions prior to specified versions are susceptible to this vulnerability.

Vulnerability Description

HTTP Live Stream audio data can be accessed cross-origin during playback on Firefox for Android.

Affected Systems and Versions

Firefox versions prior to 63, Firefox ESR versions prior to 60.3, and Thunderbird versions prior to 60.3 are impacted.

Exploitation Mechanism

Exploiting this vulnerability involves accessing audio data from different origins while using Firefox for Android to play HTTP Live Streams.

Mitigation and Prevention

Immediate Steps to Take

Update affected software to versions equal to or greater than Firefox 63, Firefox ESR 60.3, and Thunderbird 60.3.
Avoid playing HTTP Live Streams on Firefox for Android until the software is updated. Long-Term Security Practices
Regularly update software to the latest versions to patch known vulnerabilities.
Exercise caution while accessing audio or video content from untrusted sources.
Implement network security measures to prevent unauthorized access to sensitive data.
Stay informed about security advisories and apply recommended patches promptly.
Consider using alternative browsers or applications for secure audio and video streaming.

Patching and Updates

Mozilla has released updates to address this vulnerability in Firefox, Firefox ESR, and Thunderbird.
Users should promptly update their software to the latest versions to mitigate the risk of unauthorized data access.