CVE-2020-29381 Explained : Impact and Mitigation
Discover the command injection vulnerability in V-SOL OLT devices through crafted filenames. Learn about affected versions, exploitation risks, and mitigation steps.
An issue was discovered on V-SOL OLT devices that can lead to command injection via crafted filenames.
Understanding CVE-2020-29381
What is CVE-2020-29381?
This CVE identifies a vulnerability in V-SOL OLT devices that allows command injection through specific CLI commands.
The Impact of CVE-2020-29381
The vulnerability can be exploited by attackers to execute arbitrary commands on affected devices, potentially leading to unauthorized access or system compromise.
Technical Details of CVE-2020-29381
Vulnerability Description
The issue exists in the "upload tftp syslog" and "upload tftp configuration" commands in the CLI, enabling command injection when a malicious filename is used.
Affected Systems and Versions
- V-SOL V1600D: V2.03.69, V2.03.57
- V1600D4L: V1.01.49
- V1600D-MINI: V1.01.48
- V1600G1: V2.0.7, V1.9.7
- V1600G2: V1.1.4
Exploitation Mechanism
Attackers can exploit this vulnerability by manipulating filenames when using the specified CLI commands, allowing them to inject and execute arbitrary commands.
Mitigation and Prevention
Immediate Steps to Take
- Disable or restrict access to the affected CLI commands on the OLT devices.
- Implement strong access controls and authentication mechanisms to prevent unauthorized access.
Long-Term Security Practices
- Regularly update and patch the firmware of the V-SOL OLT devices to mitigate known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address potential weaknesses.
Patching and Updates
Apply patches and updates provided by V-SOL to address the vulnerability and enhance the security of the OLT devices.