CVE-2020-21246 Explained : Impact and Mitigation

CVE-2020-21246 is a Cross Site Scripting vulnerability found in YiiCMS v.1.0, allowing remote attackers to execute arbitrary code through the news function.

Understanding CVE-2020-21246

What is CVE-2020-21246?

CVE-2020-21246 is a security vulnerability in YiiCMS v.1.0 that enables attackers to perform Cross Site Scripting attacks, potentially leading to the execution of malicious code.

The Impact of CVE-2020-21246

This vulnerability can result in unauthorized execution of arbitrary code by remote attackers, posing a significant risk to the security and integrity of the affected system.

Technical Details of CVE-2020-21246

Vulnerability Description

The vulnerability in YiiCMS v.1.0 allows remote attackers to exploit Cross Site Scripting, enabling them to execute arbitrary code through the news function.

Affected Systems and Versions

Vendor: n/a
Product: n/a
Versions Affected: n/a

Exploitation Mechanism

The vulnerability can be exploited by injecting malicious scripts into the news function, which, when executed, can lead to the execution of unauthorized code.

Mitigation and Prevention

Immediate Steps to Take

Disable the news function in YiiCMS v.1.0 to prevent exploitation.
Implement input validation to sanitize user inputs and prevent script injection.

Long-Term Security Practices

Regularly update YiiCMS to the latest version to patch known vulnerabilities.
Conduct security audits and penetration testing to identify and address potential security weaknesses.

Patching and Updates

Apply security patches provided by YiiCMS promptly to address the CVE-2020-21246 vulnerability.