CVE-2021-42645 : What You Need to Know
Learn about CVE-2021-42645, a remote code execution vulnerability in CMSimple_XH 1.7.4 allowing attackers to execute arbitrary PHP code and gain unauthorized access to systems. Find mitigation steps and patching advice here.
CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability that allows an attacker to upload a PHP payload using the 'File' parameter to obtain a reverse shell from the vulnerable host.
Understanding CVE-2021-42645
CMSimple_XH 1.7.4 remote code execution vulnerability
What is CVE-2021-42645?
CVE-2021-42645 is a security vulnerability in CMSimple_XH 1.7.4 that enables remote code execution through the upload of a PHP payload, providing attackers with a reverse shell on the compromised system.
The Impact of CVE-2021-42645
- Remote attackers can exploit this vulnerability to execute arbitrary PHP code on the target system.
- Unauthorized access to sensitive data or system control can occur due to the successful exploitation of this vulnerability.
Technical Details of CVE-2021-42645
Details of the technical aspects of the CVE
Vulnerability Description
- Vulnerability Type: Remote Code Execution (RCE)
- The vulnerability arises from improper input validation on the 'File' parameter.
Affected Systems and Versions
- Affected System: CMSimple_XH 1.7.4
- Vulnerable Version: 1.7.4
Exploitation Mechanism
- Attackers upload a malicious PHP payload using the 'File' parameter to gain unauthorized access and control over the target system.
Mitigation and Prevention
Ways to mitigate and prevent the CVE-2021-42645 vulnerability
Immediate Steps to Take
- Apply the latest security patches provided by CMSimple_XH promptly.
- Implement proper input validation mechanisms to prevent unauthorized file uploads.
- Regularly monitor for unusual file upload activities on the system.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify vulnerabilities proactively.
- Educate users and administrators on secure coding practices to prevent similar exploitation attempts.
Patching and Updates
- Update CMSimple_XH to the latest version (1.7.5) where the vulnerability has been addressed.
- Stay informed about security advisories from CMSimple_XH to deploy timely patches and updates.