CVE-2021-43711 Explained : Impact and Mitigation
Learn about CVE-2021-43711, a command injection vulnerability in TOTOLINK EX200 V4.0.3c.7646_B20201211 allowing unauthorized execution of commands. Find mitigation steps and preventive measures.
TOTOLINK EX200 V4.0.3c.7646_B20201211 has a command injection vulnerability that allows unauthenticated command execution.
Understanding CVE-2021-43711
What is CVE-2021-43711?
The downloadFlile.cgi binary file in TOTOLINK EX200 V4.0.3c.7646_B20201211 is vulnerable to command injection through crafted GET parameters, enabling unauthenticated users to execute arbitrary commands.
The Impact of CVE-2021-43711
This vulnerability could lead to unauthorized remote command execution on vulnerable systems, potentially resulting in data breaches, system compromise, or denial of service attacks.
Technical Details of CVE-2021-43711
Vulnerability Description
The downloadFlile.cgi binary in TOTOLINK EX200 V4.0.3c.7646_B20201211 allows unauthenticated users to execute commands through manipulated GET parameters.
Affected Systems and Versions
- Product: TOTOLINK EX200 V4.0.3c.7646_B20201211
- Vendor: TOTOLINK
- Version: N/A
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting specific GET parameters to execute unauthorized commands on the affected TOTOLINK EX200 version.
Mitigation and Prevention
Immediate Steps to Take
- Disable the affected binary file if not essential for operations.
- Implement access controls and strong authentication mechanisms.
Long-Term Security Practices
- Regularly update firmware and apply security patches.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
Patching and Updates
Ensure that the TOTOLINK EX200 firmware is up to date with the latest patches and security fixes.