CVE-2020-28187 : Vulnerability Insights and Analysis

TerraMaster TOS <= 4.2.06 is affected by multiple directory traversal vulnerabilities that enable remote authenticated attackers to manipulate files within the filesystem.

Understanding CVE-2020-28187

This CVE identifies vulnerabilities in TerraMaster TOS that allow unauthorized access to sensitive files.

What is CVE-2020-28187?

The CVE-2020-28187 vulnerability in TerraMaster TOS <= 4.2.06 permits remote authenticated attackers to view, modify, or delete files through specific parameters in various URLs.

The Impact of CVE-2020-28187

These vulnerabilities can lead to unauthorized access and manipulation of critical files, potentially compromising the integrity and confidentiality of data stored on the system.

Technical Details of CVE-2020-28187

TerraMaster TOS <= 4.2.06 is susceptible to exploitation due to the following:

Vulnerability Description

Multiple directory traversal vulnerabilities in TerraMaster TOS <= 4.2.06 allow remote authenticated attackers to read, edit, or delete any file within the filesystem by manipulating specific parameters in certain URLs.

Affected Systems and Versions

Product: TerraMaster TOS
Vendor: TerraMaster
Versions: <= 4.2.06

Exploitation Mechanism

Attackers can exploit the vulnerabilities by manipulating the filename parameter in /tos/index.php?editor/fileGet, the Event parameter in /include/ajax/logtable.php, or the opt parameter in /include/core/index.php.

Mitigation and Prevention

Taking immediate action and implementing long-term security practices are crucial to mitigate the risks associated with CVE-2020-28187.

Immediate Steps to Take

Update TerraMaster TOS to the latest version to patch the vulnerabilities.
Monitor system logs for any suspicious activities.

Long-Term Security Practices

Regularly review and update access controls to restrict unauthorized file manipulation.
Conduct security audits to identify and address potential vulnerabilities.

Patching and Updates

Apply security patches provided by TerraMaster promptly to address the vulnerabilities and enhance system security.