CVE-2020-14021 Explained : Impact and Mitigation
Discover the impact of CVE-2020-14021 in Ozeki NG SMS Gateway through 4.17.6. Learn about the vulnerability allowing unauthorized access to system files and how to mitigate the risk.
An issue was discovered in Ozeki NG SMS Gateway through 4.17.6 where the ASP.net SMS module can be exploited to read any file on the Operating System, typically with NT AUTHORITY\SYSTEM privileges.
Understanding CVE-2020-14021
This CVE involves a vulnerability in Ozeki NG SMS Gateway that allows unauthorized access to system files.
What is CVE-2020-14021?
The vulnerability in Ozeki NG SMS Gateway through version 4.17.6 enables the ASP.net SMS module to read and validate ASP file source code, potentially leading to unauthorized access to system files by manipulating the file path.
The Impact of CVE-2020-14021
The exploitation of this vulnerability can result in unauthorized access to sensitive system files, potentially compromising system integrity and confidentiality.
Technical Details of CVE-2020-14021
This section provides technical details of the vulnerability.
Vulnerability Description
The vulnerability allows the ASP.net SMS module in Ozeki NG SMS Gateway to read and validate ASP file source code, leading to potential unauthorized access to system files by altering the file path.
Affected Systems and Versions
- Product: Ozeki NG SMS Gateway
- Version: up to 4.17.6
Exploitation Mechanism
The vulnerability can be exploited by manipulating the file path within the ASP.net SMS module, allowing unauthorized access to system files.
Mitigation and Prevention
Protecting systems from CVE-2020-14021 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Update Ozeki NG SMS Gateway to the latest version that includes a patch for the vulnerability.
- Monitor system files and access logs for any suspicious activities.
Long-Term Security Practices
- Implement the principle of least privilege to restrict access to critical system files.
- Regularly audit and review system file permissions to ensure proper access control.
Patching and Updates
- Apply patches and updates provided by the vendor to address the vulnerability and enhance system security.