CVE-2020-5795 : What You Need to Know

This CVE involves a vulnerability in TP-Link Archer A7 v5 firmware that allows an authenticated admin user to execute arbitrary code by plugging a crafted USB drive into the router.

Understanding CVE-2020-5795

This vulnerability enables a specific attack vector that can compromise the security of the affected device.

What is CVE-2020-5795?

The CVE-2020-5795 vulnerability pertains to UNIX Symbolic Link (Symlink) Following in TP-Link Archer A7 v5 firmware, allowing an authenticated admin user to execute arbitrary code by inserting a manipulated USB drive.

The Impact of CVE-2020-5795

The exploitation of this vulnerability can lead to unauthorized code execution, potentially compromising the confidentiality, integrity, and availability of the device and the network it is connected to.

Technical Details of CVE-2020-5795

This section delves into the specifics of the vulnerability.

Vulnerability Description

The flaw in TP-Link Archer A7 v5 firmware permits an authenticated admin user to execute arbitrary code by connecting a specially crafted USB drive to the router.

Affected Systems and Versions

Product: TP-Link Archer A7 v5
Version: Firmware Archer A7(US)_V5_200721

Exploitation Mechanism

The vulnerability can be exploited by an authenticated admin user with physical and network access by inserting a manipulated USB drive into the router.

Mitigation and Prevention

Protecting against CVE-2020-5795 requires immediate actions and long-term security measures.

Immediate Steps to Take

Apply security patches provided by the vendor promptly.
Restrict physical access to the router to authorized personnel only.
Monitor USB drive usage and restrict unauthorized devices.

Long-Term Security Practices

Regularly update firmware and software to address security vulnerabilities.
Implement network segmentation to limit the impact of potential breaches.
Conduct security training for users to raise awareness of social engineering tactics.
Employ intrusion detection and prevention systems to monitor and block malicious activities.
Follow the principle of least privilege to restrict access rights.

Patching and Updates

Ensure that the latest firmware updates and security patches are installed to mitigate the risk of exploitation.