CVE-2020-35314 : Exploit Details and Defense Strategies
Learn about CVE-2020-35314, a remote code execution vulnerability in WonderCMS 3.1.3 that allows attackers to upload a custom plugin with arbitrary code, potentially leading to a webshell exploit. Find mitigation steps and preventive measures here.
WonderCMS 3.1.3 is affected by a remote code execution vulnerability that allows attackers to upload a custom plugin containing arbitrary code, potentially leading to a webshell exploit.
Understanding CVE-2020-35314
What is CVE-2020-35314?
The vulnerability exists in the installUpdateThemePluginAction function in index.php in WonderCMS 3.1.3, enabling remote attackers to execute code by uploading a malicious plugin.
The Impact of CVE-2020-35314
This vulnerability allows threat actors to upload a custom plugin with arbitrary code, potentially leading to a webshell exploit through the theme/plugin installer.
Technical Details of CVE-2020-35314
Vulnerability Description
The flaw in WonderCMS 3.1.3 permits remote code execution by malicious actors through the installation of a custom plugin.
Affected Systems and Versions
- Product: WonderCMS 3.1.3
- Vendor: N/A
- Version: N/A
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading a specially crafted plugin containing malicious code, which can then be used to execute arbitrary commands.
Mitigation and Prevention
Immediate Steps to Take
- Disable the theme/plugin installer in WonderCMS 3.1.3 if not essential for operations.
- Implement strict file upload controls to prevent the execution of arbitrary code.
Long-Term Security Practices
- Regularly update WonderCMS to the latest version to patch known vulnerabilities.
- Conduct security audits to identify and address any potential weaknesses in the system.
- Educate users on safe practices to prevent the installation of malicious plugins.
Patching and Updates
Ensure that WonderCMS is updated to a secure version that addresses the remote code execution vulnerability.