CVE-2020-15433 : Security Advisory and Response
Learn about CVE-2020-15433, a critical vulnerability in CentOS Web Panel allowing remote code execution without authentication. Find mitigation steps and preventive measures.
This vulnerability allows remote attackers to execute arbitrary code on affected installations of CentOS Web Panel cwp-e17.0.9.8.923 without requiring authentication. The flaw exists within ajax_php_pecl.php, enabling attackers to execute code in the context of root.
Understanding CVE-2020-15433
This CVE identifies a critical vulnerability in CentOS Web Panel that can be exploited remotely to execute arbitrary code.
What is CVE-2020-15433?
CVE-2020-15433 is a vulnerability in CentOS Web Panel that allows attackers to run arbitrary code on affected systems without needing authentication. The issue lies in the inadequate validation of user-supplied input in the phpversion parameter of ajax_php_pecl.php.
The Impact of CVE-2020-15433
The impact of this vulnerability is severe:
- CVSS Base Score: 9.8 (Critical)
- Attack Vector: Network
- Attack Complexity: Low
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: None
- User Interaction: None
Technical Details of CVE-2020-15433
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability stems from improper validation of user-supplied input in the phpversion parameter of ajax_php_pecl.php, allowing remote attackers to execute arbitrary code.
Affected Systems and Versions
- Affected Product: CentOS Web Panel
- Affected Version: cwp-e17.0.9.8.923
Exploitation Mechanism
Attackers exploit the vulnerability by manipulating the phpversion parameter to execute system calls, enabling them to run code as root.
Mitigation and Prevention
Protecting systems from CVE-2020-15433 requires immediate action and long-term security practices.
Immediate Steps to Take
- Apply security patches promptly
- Monitor for any unauthorized access or unusual system behavior
- Consider restricting network access to vulnerable services
Long-Term Security Practices
- Regularly update and patch software
- Conduct security assessments and penetration testing
- Implement network segmentation and access controls
Patching and Updates
- Update CentOS Web Panel to the latest version to mitigate the vulnerability