CVE-2019-11752 : Vulnerability Insights and Analysis

A use-after-free vulnerability affecting Firefox, Thunderbird, and Firefox ESR versions prior to specific versions.

Understanding CVE-2019-11752

This CVE involves a use-after-free error when extracting a key value in IndexedDB, impacting various Mozilla products.

What is CVE-2019-11752?

The vulnerability allows for a crash by deleting an IndexedDB key value and attempting to access it later, affecting multiple versions of Firefox, Thunderbird, and Firefox ESR.

The Impact of CVE-2019-11752

The vulnerability can potentially lead to a crash and exploitation, affecting the stability and security of the impacted software.

Technical Details of CVE-2019-11752

Details on the vulnerability affecting Firefox, Thunderbird, and Firefox ESR.

Vulnerability Description

The issue arises from deleting an IndexedDB key value and trying to extract it, resulting in a use-after-free error and potential crash.

Affected Systems and Versions

Firefox versions prior to 69
Thunderbird versions prior to 68.1 and 60.9
Firefox ESR versions prior to 60.9 and 68.1

Exploitation Mechanism

Exploitation involves triggering the use-after-free error by manipulating IndexedDB key values.

Mitigation and Prevention

Measures to address and prevent the CVE-2019-11752 vulnerability.

Immediate Steps to Take

Update affected software to versions beyond the specified vulnerable releases.
Monitor vendor advisories for patches and security updates.

Long-Term Security Practices

Regularly update software to the latest versions to mitigate known vulnerabilities.
Implement secure coding practices to prevent similar memory-related issues.

Patching and Updates

Apply patches and updates provided by Mozilla and other relevant vendors to address the vulnerability.