CVE-2020-15421 Explained : Impact and Mitigation
Learn about CVE-2020-15421, a critical vulnerability in CentOS Web Panel cwp-e17.0.9.8.923 allowing remote code execution. Find mitigation steps and long-term security practices.
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_mod_security.php, allowing attackers to execute code in the context of root.
Understanding CVE-2020-15421
This CVE affects CentOS Web Panel version cwp-e17.0.9.8.923.
What is CVE-2020-15421?
CVE-2020-15421 is a critical vulnerability that enables remote attackers to execute arbitrary code on CentOS Web Panel installations without authentication.
The Impact of CVE-2020-15421
The vulnerability has a CVSS base score of 9.8, indicating a critical severity level with high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2020-15421
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw allows attackers to execute code on CentOS Web Panel cwp-e17.0.9.8.923 by exploiting the ajax_mod_security.php file's improper validation of user-supplied strings.
Affected Systems and Versions
- Product: CentOS Web Panel
- Vendor: CentOS Web Panel
- Version: cwp-e17.0.9.8.923
Exploitation Mechanism
Attackers can exploit the vulnerability by manipulating the check_ip parameter to execute a system call with user-supplied strings, leading to arbitrary code execution.
Mitigation and Prevention
Protecting systems from CVE-2020-15421 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches promptly to mitigate the vulnerability.
- Monitor and restrict network access to vulnerable systems.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Conduct regular security assessments and audits to identify and address vulnerabilities.
- Educate users and administrators on secure coding practices and awareness of social engineering tactics.
Patching and Updates
- Regularly update and patch the CentOS Web Panel to the latest version to address known vulnerabilities and enhance system security.