CVE-2020-15568 : Security Advisory and Response

TerraMaster TOS before 4.1.29 has Invalid Parameter Checking that leads to code injection as root. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2020-15568

This CVE involves a dynamic class method invocation vulnerability in include/exportUser.php, allowing an attacker to execute OS commands.

What is CVE-2020-15568?

This vulnerability in TerraMaster TOS before version 4.1.29 enables code injection as the root user through the exec method in include/exportUser.php.

The Impact of CVE-2020-15568

The vulnerability allows an attacker to trigger the exec method with OS commands, potentially leading to unauthorized access and control of the system.

Technical Details of CVE-2020-15568

This section provides more in-depth technical insights into the vulnerability.

Vulnerability Description

The issue arises from Invalid Parameter Checking in TerraMaster TOS, enabling code injection by invoking the exec method with malicious OS commands.

Affected Systems and Versions

Affected System: TerraMaster TOS before version 4.1.29
Affected Version: Not specified

Exploitation Mechanism

The attacker can exploit the vulnerability by manipulating the opt parameter in include/exportUser.php to execute arbitrary OS commands.

Mitigation and Prevention

Protect your system from CVE-2020-15568 with these mitigation strategies.

Immediate Steps to Take

Update TerraMaster TOS to version 4.1.29 or newer to patch the vulnerability.
Monitor system logs for any suspicious activities that might indicate exploitation.

Long-Term Security Practices

Implement strict input validation to prevent code injection attacks.
Regularly audit and update system components to address security vulnerabilities.

Patching and Updates

Stay informed about security advisories and promptly apply patches released by TerraMaster to address known vulnerabilities.