CVE-2020-5788 : Security Advisory and Response

A vulnerability in Teltonika Gateway TRB245 firmware allows remote attackers to delete files on disk.

Understanding CVE-2020-5788

This CVE involves a relative path traversal issue in the Teltonika TRB2_R_00.02.04.3 firmware, enabling attackers to delete arbitrary files.

What is CVE-2020-5788?

The vulnerability permits authenticated remote attackers to delete files on disk through a specific admin action.

The Impact of CVE-2020-5788

The vulnerability poses a risk of unauthorized file deletion by attackers, potentially leading to data loss or system compromise.

Technical Details of CVE-2020-5788

This section provides technical insights into the vulnerability.

Vulnerability Description

The flaw in Teltonika TRB2_R_00.02.04.3 firmware allows attackers to perform relative path traversal, leading to unauthorized file deletion.

Affected Systems and Versions

Product: Teltonika Gateway TRB245
Version: TRB2_R_00.02.04.3 firmware

Exploitation Mechanism

Attackers can exploit this vulnerability by leveraging the admin/system/admin/certificates/delete action to delete files on the system.

Mitigation and Prevention

Protecting systems from CVE-2020-5788 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply security patches provided by Teltonika promptly.
Monitor system logs for any suspicious activities related to file deletions.

Long-Term Security Practices

Implement access controls to restrict admin actions that involve file deletion.
Regularly update firmware and security configurations to prevent similar vulnerabilities.

Patching and Updates

Ensure that the latest firmware updates and security patches from Teltonika are applied to mitigate the vulnerability.