CVE-2017-7818 : Security Advisory and Response

A use-after-free vulnerability affecting Firefox, Firefox ESR, and Thunderbird versions less than specified. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2017-7818

This CVE involves manipulating arrays of Accessible Rich Internet Applications (ARIA) elements within DOM containers, leading to a use-after-free vulnerability.

What is CVE-2017-7818?

A use-after-free vulnerability occurs when manipulating ARIA elements within containers through the DOM, potentially causing a crash.
Affected products include Firefox < 56, Firefox ESR < 52.4, and Thunderbird < 52.4.

The Impact of CVE-2017-7818

Exploiting this vulnerability can result in a crash that may be leveraged by attackers.

Technical Details of CVE-2017-7818

Understanding the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

Manipulating ARIA elements within DOM containers can trigger a use-after-free vulnerability.

Affected Systems and Versions

Firefox versions less than 56, Firefox ESR versions less than 52.4, and Thunderbird versions less than 52.4 are impacted.

Exploitation Mechanism

By manipulating arrays of ARIA elements within containers, attackers can exploit the vulnerability.

Mitigation and Prevention

Exploring immediate and long-term steps to enhance security.

Immediate Steps to Take

Update affected software to versions beyond the specified vulnerable ones.
Employ browser security best practices to mitigate risks.

Long-Term Security Practices

Regularly update software to patch known vulnerabilities.
Implement secure coding practices to prevent similar issues.

Patching and Updates

Stay informed about security advisories and apply patches promptly to secure systems.