CVE-2020-4043 : Security Advisory and Response
Learn about CVE-2020-4043 affecting phpMussel versions 1.0.0 to less than 1.6.0. This vulnerability allows arbitrary code execution. Find mitigation steps and long-term security practices here.
phpMussel from versions 1.0.0 to less than 1.6.0 is affected by an unserialization vulnerability in PHP's phar wrapper, allowing arbitrary code execution. This CVE has a CVSS base score of 7.7 (High Severity).
Understanding CVE-2020-4043
This CVE pertains to a vulnerability in phpMussel versions 1.0.0 to less than 1.6.0 that enables arbitrary code execution through a specially crafted file upload.
What is CVE-2020-4043?
CVE-2020-4043 is a security vulnerability in phpMussel versions 1.0.0 to less than 1.6.0 due to an unserialization flaw in PHP's phar wrapper.
The Impact of CVE-2020-4043
- CVSS Base Score: 7.7 (High Severity)
- Attack Vector: Network
- Integrity Impact: High
- Privileges Required: Low
- Scope: Changed
- Uploading a malicious file to affected versions allows attackers to execute arbitrary code.
Technical Details of CVE-2020-4043
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability arises from improper handling of unserialization in PHP's phar wrapper, enabling attackers to execute arbitrary code.
Affected Systems and Versions
- Affected Product: phpMussel
- Vendor: phpMussel
- Affected Versions: >= 1.0.0, < 1.6.0
Exploitation Mechanism
Attackers can exploit this vulnerability by uploading a specially crafted file to the affected phpMussel versions, triggering the unserialization flaw.
Mitigation and Prevention
Protecting systems from CVE-2020-4043 involves immediate actions and long-term security practices.
Immediate Steps to Take
- Update phpMussel to version 1.6.0 or newer to mitigate the vulnerability.
- Implement strict file upload validation to prevent malicious uploads.
Long-Term Security Practices
- Regularly monitor and apply security patches to all software components.
- Conduct security audits and penetration testing to identify and address vulnerabilities.
Patching and Updates
Ensure timely installation of security patches and updates to prevent exploitation of known vulnerabilities.