CVE-2019-11715 : What You Need to Know

In certain situations, web sites may be exposed to cross-site scripting (XSS) risks due to a parsing error in page content. This issue can occur when sanitized user input is mistakenly interpreted, affecting Firefox ESR versions prior to 60.8, Firefox versions prior to 68, and Thunderbird versions prior to 60.8.

Understanding CVE-2019-11715

This CVE involves a vulnerability that can lead to cross-site scripting (XSS) risks on web pages due to a parsing error in page content.

What is CVE-2019-11715?

CVE-2019-11715 is a vulnerability that arises from an error in parsing page content, potentially allowing sanitized user input to be misinterpreted and leading to cross-site scripting (XSS) hazards on websites.

The Impact of CVE-2019-11715

The vulnerability affects Firefox ESR versions prior to 60.8, Firefox versions prior to 68, and Thunderbird versions prior to 60.8, exposing them to XSS risks.

Technical Details of CVE-2019-11715

This section provides detailed technical information about the CVE.

Vulnerability Description

The vulnerability stems from a parsing error in page content, enabling sanitized user input to be misinterpreted and posing XSS risks on affected web pages.

Affected Systems and Versions

Product: Firefox ESR
Vendor: Mozilla
Versions Affected: < 60.8
Product: Firefox
Vendor: Mozilla
Versions Affected: < 68
Product: Thunderbird
Vendor: Mozilla
Versions Affected: < 60.8

Exploitation Mechanism

The vulnerability occurs when sanitized user input is incorrectly interpreted due to a parsing error in page content, leading to potential XSS vulnerabilities.

Mitigation and Prevention

Protecting systems from CVE-2019-11715 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update affected software to versions 60.8 for Firefox ESR, 68 for Firefox, and 60.8 for Thunderbird.
Implement strict input validation to prevent XSS attacks.

Long-Term Security Practices

Regularly monitor security advisories from Mozilla and apply patches promptly.
Educate users on safe browsing practices to mitigate XSS risks.

Patching and Updates

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