CVE-2020-27403 : Security Advisory and Response
Learn about CVE-2020-27403, a vulnerability in TCL Android Smart TVs allowing unauthorized access to critical files. Find out the impact, affected systems, exploitation mechanism, and mitigation steps.
A vulnerability in the TCL Android Smart TV series V8-R851T02-LF1 V295 and below and V8-T658T01-LF1 V373 and below by TCL Technology Group Corporation allows unauthorized access to sensitive files, potentially leading to critical information disclosure.
Understanding CVE-2020-27403
This CVE describes a security flaw in TCL Android Smart TVs that could be exploited by an attacker on the same network to access and download critical files.
What is CVE-2020-27403?
The vulnerability in TCL Android Smart TVs enables an attacker on the adjacent network to browse and download sensitive files over an insecure web server running on specific ports, potentially exposing critical information.
The Impact of CVE-2020-27403
The vulnerability allows unprivileged remote attackers to access most system files, leading to severe information disclosure. Additionally, certain TV models may expose the entire filesystem, allowing unauthorized access to sensitive data.
Technical Details of CVE-2020-27403
This section provides more technical insights into the vulnerability.
Vulnerability Description
The flaw in TCL Android Smart TVs permits attackers on the same network to access and download sensitive files through an insecure web server running on specific ports.
Affected Systems and Versions
- TCL Android Smart TV series V8-R851T02-LF1 V295 and below
- TCL Android Smart TV series V8-T658T01-LF1 V373 and below
Exploitation Mechanism
- Attackers on the adjacent network can exploit the vulnerability to access critical files over an insecure web server running on specific ports.
- The web server may expose the entire filesystem, allowing unauthorized access to sensitive data.
Mitigation and Prevention
Protecting systems from CVE-2020-27403 is crucial to prevent unauthorized access and data breaches.
Immediate Steps to Take
- Disable any unnecessary services or ports on the TV to limit exposure to potential attacks.
- Regularly monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Keep the TV firmware up to date to patch known vulnerabilities.
- Implement network segmentation to isolate smart devices from critical systems.
Patching and Updates
- Check for firmware updates from TCL Technology Group Corporation to address the vulnerability and apply them promptly.