CVE-2020-5267 : Vulnerability Insights and Analysis

In ActionView before versions 6.0.2.2 and 5.2.4.2, a possible XSS vulnerability exists in ActionView's JavaScript literal escape helpers, potentially leading to XSS attacks.

Understanding CVE-2020-5267

This CVE involves a Cross-Site Scripting (XSS) vulnerability in ActionView.

What is CVE-2020-5267?

CVE-2020-5267 is a security vulnerability in ActionView's JavaScript literal escape helpers, affecting versions prior to 6.0.2.2 and 5.2.4.2. It allows attackers to execute malicious scripts on the victim's browser.

The Impact of CVE-2020-5267

The vulnerability has a CVSS base score of 4 (Medium severity) with a HIGH attack complexity. It requires user interaction and high privileges to exploit, potentially leading to XSS attacks.

Technical Details of CVE-2020-5267

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The XSS vulnerability in ActionView's JavaScript literal escape helpers allows attackers to execute malicious scripts in the context of the victim's session.

Affected Systems and Versions

Product: actionview
Vendor: rails
Versions Affected:
< 5.2.4.2

= 6.0.0, < 6.0.2.2

Exploitation Mechanism

Attackers can exploit this vulnerability by injecting malicious scripts into views that use the

j

or

escape_javascript

methods, leading to potential XSS attacks.

Mitigation and Prevention

Protecting systems from CVE-2020-5267 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update ActionView to versions 6.0.2.2 or 5.2.4.2, where the issue is fixed.
Review and sanitize input data to prevent script injection.

Long-Term Security Practices

Regularly update software components to the latest secure versions.
Implement input validation and output encoding to mitigate XSS vulnerabilities.

Patching and Updates

Apply patches provided by the vendor to address the XSS vulnerability in ActionView.