CVE-2020-5769 : Exploit Details and Defense Strategies

Teltonika Gateway TRB245 firmware version TRB2_R_00.02.02 is vulnerable to authenticated stored cross-site scripting (XSS) attacks due to insufficient output sanitization.

Understanding CVE-2020-5769

This CVE identifies a security issue in Teltonika Gateway TRB245 firmware that allows authenticated attackers to execute persistent XSS attacks.

What is CVE-2020-5769?

Insufficient output sanitization in Teltonika firmware TRB2_R_00.02.02 enables remote authenticated attackers to inject malicious client-side code into specific configuration forms, leading to persistent XSS attacks.

The Impact of CVE-2020-5769

The vulnerability can be exploited by attackers with authenticated access, potentially leading to the execution of arbitrary code, data theft, or unauthorized actions within the affected system.

Technical Details of CVE-2020-5769

Teltonika Gateway TRB245 firmware version TRB2_R_00.02.02 is susceptible to authenticated stored cross-site scripting (XSS) attacks due to inadequate output sanitization.

Vulnerability Description

The flaw allows authenticated attackers to insert malicious scripts into the 'URL/ Host / Connection' form in the 'DATA TO SERVER' configuration section, facilitating persistent XSS attacks.

Affected Systems and Versions

Product: Teltonika Gateway TRB245
Version: TRB2_R_00.02.02 firmware

Exploitation Mechanism

Attackers with authenticated access can exploit the vulnerability by injecting malicious client-side code into specific forms, enabling the execution of XSS attacks.

Mitigation and Prevention

To address CVE-2020-5769, users should take immediate steps and implement long-term security practices to enhance system protection.

Immediate Steps to Take

Apply security patches provided by Teltonika to mitigate the vulnerability.
Monitor and restrict access to the affected configuration sections to authorized personnel only.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Conduct security assessments and penetration testing to identify and remediate potential weaknesses.

Patching and Updates

Teltonika may release patches or updates to address the XSS vulnerability; users should promptly apply these updates to secure their systems.