CVE-2020-20746 Explained : Impact and Mitigation
Learn about CVE-2020-20746, a critical stack-based buffer overflow vulnerability in the httpd server on Tenda AC9 V15.03.06.60_EN, allowing remote code execution and denial of service attacks.
A stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via a crafted POST request to /goform/SetStaticRouteCfg.
Understanding CVE-2020-20746
This CVE involves a critical vulnerability in the httpd server on Tenda AC9 V15.03.06.60_EN, enabling attackers to execute malicious code or disrupt services.
What is CVE-2020-20746?
A stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN allows remote attackers to execute arbitrary code or cause a denial of service (DoS) via a crafted POST request to /goform/SetStaticRouteCfg.
The Impact of CVE-2020-20746
- Remote attackers can exploit this vulnerability to execute arbitrary code on the target system.
- It also allows attackers to disrupt services by causing a denial of service (DoS) through a specific POST request.
Technical Details of CVE-2020-20746
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in the httpd server on Tenda AC9 V15.03.06.60_EN.
Affected Systems and Versions
- Product: Tenda AC9 V15.03.06.60_EN
- Vendor: Tenda
- Version: Not applicable
Exploitation Mechanism
Attackers can exploit this vulnerability by sending a crafted POST request to /goform/SetStaticRouteCfg.
Mitigation and Prevention
Protecting systems from CVE-2020-20746 requires immediate action and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by the vendor promptly.
- Implement network-level controls to restrict access to vulnerable services.
- Monitor network traffic for any suspicious activity.
Long-Term Security Practices
- Regularly update and patch all software and firmware on network devices.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
- Educate users and administrators about safe computing practices.
Patching and Updates
- Stay informed about security updates and patches released by Tenda for the AC9 V15.03.06.60_EN.