CVE-2020-35313 : Security Advisory and Response

WonderCMS 3.1.3 is affected by a server-side request forgery (SSRF) vulnerability that allows remote attackers to execute arbitrary code via a crafted URL to the theme/plugin installer.

Understanding CVE-2020-35313

What is CVE-2020-35313?

This CVE identifies a security flaw in WonderCMS 3.1.3 that enables attackers to trigger SSRF attacks, potentially leading to the execution of malicious code.

The Impact of CVE-2020-35313

The vulnerability in WonderCMS 3.1.3 can result in remote code execution, posing a significant risk to the security and integrity of the affected systems.

Technical Details of CVE-2020-35313

Vulnerability Description

The SSRF vulnerability in the addCustomThemePluginRepository function in index.php of WonderCMS 3.1.3 allows attackers to execute arbitrary code by manipulating URLs in the theme/plugin installer.

Affected Systems and Versions

Product: WonderCMS
Version: 3.1.3

Exploitation Mechanism

Attackers exploit this vulnerability by sending specially crafted URLs to the theme/plugin installer, tricking the server into executing malicious code.

Mitigation and Prevention

Immediate Steps to Take

Update WonderCMS to the latest version to patch the SSRF vulnerability.
Implement strict input validation to prevent malicious URL manipulation.

Long-Term Security Practices

Regularly monitor and audit server-side requests for any suspicious activity.
Educate users and administrators about the risks of SSRF attacks and best security practices.

Patching and Updates

Stay informed about security updates and patches released by WonderCMS.