CVE-2019-11717 : Vulnerability Insights and Analysis

A vulnerability exists in certain URIs where the caret character is not properly escaped, potentially leading to spoofing of origin attributes in Mozilla Firefox ESR, Firefox, and Thunderbird.

Understanding CVE-2019-11717

This CVE affects versions of Firefox ESR earlier than 60.8, Firefox versions earlier than 68, and Thunderbird versions earlier than 60.8.

What is CVE-2019-11717?

This vulnerability arises from the improper escaping of the caret character in constructing URIs, which can be exploited for spoofing origin attributes.

The Impact of CVE-2019-11717

The vulnerability can be exploited to spoof origin attributes, potentially leading to security breaches and unauthorized access.

Technical Details of CVE-2019-11717

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The issue stems from the improper handling of the caret character in certain URIs, allowing for potential spoofing of origin attributes.

Affected Systems and Versions

Firefox ESR versions earlier than 60.8
Firefox versions earlier than 68
Thunderbird versions earlier than 60.8

Exploitation Mechanism

By manipulating URIs with the unescaped caret character, attackers can potentially spoof origin attributes, leading to security risks.

Mitigation and Prevention

Protect your systems from CVE-2019-11717 with these mitigation strategies.

Immediate Steps to Take

Update Firefox ESR, Firefox, and Thunderbird to versions 60.8, 68, and 60.8 respectively.
Exercise caution when interacting with URIs containing special characters.

Long-Term Security Practices

Regularly update software to the latest versions to patch known vulnerabilities.
Educate users on safe browsing practices and the importance of software updates.

Patching and Updates

Stay informed about security advisories from Mozilla and promptly apply recommended patches to secure your systems.