CVE-2017-5411 Explained : Impact and Mitigation

A use-after-free vulnerability in the ANGLE graphics library used for WebGL content can lead to a potentially exploitable crash in Firefox and Thunderbird versions prior to 52.

Understanding CVE-2017-5411

What is CVE-2017-5411?

A use-after-free vulnerability can occur during buffer storage operations in the ANGLE graphics library, specifically within the "libGLES" component used for WebGL content. This vulnerability affects Firefox and Thunderbird versions prior to 52 on Windows operating systems.

The Impact of CVE-2017-5411

The vulnerability can result in a crash that may be potentially exploitable, posing a security risk to affected systems.

Technical Details of CVE-2017-5411

Vulnerability Description

The issue arises from a situation in the ANGLE graphics library where buffer storage can be freed while still in use, potentially leading to a crash.

Affected Systems and Versions

Product: Firefox
Vendor: Mozilla
Versions Affected: Prior to 52
Product: Thunderbird
Vendor: Mozilla
Versions Affected: Prior to 52

Exploitation Mechanism

The vulnerability can be exploited by triggering the use-after-free condition during buffer storage operations.

Mitigation and Prevention

Immediate Steps to Take

Update Firefox and Thunderbird to versions 52 or above to mitigate the vulnerability.
Regularly monitor security advisories from Mozilla for any patches or updates.

Long-Term Security Practices

Implement secure coding practices to prevent use-after-free vulnerabilities.
Conduct regular security audits and penetration testing to identify and address potential vulnerabilities.

Patching and Updates

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