CVE-2019-11746 Explained : Impact and Mitigation

A use-after-free vulnerability in video manipulation in Mozilla Firefox, Thunderbird, and Firefox ESR versions prior to specified versions.

Understanding CVE-2019-11746

A vulnerability that could lead to a crash and potential exploitation in older versions of Mozilla products.

What is CVE-2019-11746?

If the body is freed while in use, a use-after-free vulnerability may occur during video element manipulation, impacting older versions of Firefox, Thunderbird, and Firefox ESR.

The Impact of CVE-2019-11746

The vulnerability could result in a crash that may be exploited, affecting systems running outdated versions of Mozilla products.

Technical Details of CVE-2019-11746

A vulnerability related to video element manipulation in Mozilla products.

Vulnerability Description

A use-after-free vulnerability during video manipulation, potentially leading to exploitation.

Affected Systems and Versions

Firefox versions older than 69
Thunderbird versions prior to 68.1 and 60.9
Firefox ESR versions earlier than 60.9 and 68.1

Exploitation Mechanism

The vulnerability occurs when the body is freed while still in use, allowing for potential exploitation during video element manipulation.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-11746 vulnerability.

Immediate Steps to Take

Update affected Mozilla products to versions 69 (Firefox), 68.1 (Thunderbird), and 60.9 (Thunderbird and Firefox ESR).
Monitor security advisories for patches and updates.

Long-Term Security Practices

Regularly update software to the latest versions.
Implement security best practices for web browsing and email usage.

Patching and Updates

Apply patches provided by Mozilla for the affected products to mitigate the vulnerability.