CVE-2020-8797 : Vulnerability Insights and Analysis

Juplink RX4-1500 v1.0.3 allows remote attackers to gain root access to the Linux subsystem via an unsanitized exec call (aka Command Line Injection), if the undocumented telnetd service is enabled and the attacker can authenticate as admin from the local network.

Understanding CVE-2020-8797

This CVE entry describes a vulnerability in Juplink RX4-1500 v1.0.3 that can lead to unauthorized root access on the Linux subsystem.

What is CVE-2020-8797?

CVE-2020-8797 is a security vulnerability in Juplink RX4-1500 v1.0.3 that allows remote attackers to exploit an unsanitized exec call, enabling them to gain root access to the Linux subsystem.

The Impact of CVE-2020-8797

The vulnerability can be exploited by attackers who can authenticate as admin from the local network, potentially leading to unauthorized access and control over the affected system.

Technical Details of CVE-2020-8797

This section provides more technical insights into the vulnerability.

Vulnerability Description

Juplink RX4-1500 v1.0.3 is susceptible to a Command Line Injection vulnerability due to an unsanitized exec call, which can be exploited by remote attackers.

Affected Systems and Versions

Product: Juplink RX4-1500
Version: v1.0.3

Exploitation Mechanism

Attackers can exploit the vulnerability if the undocumented telnetd service is enabled and they can authenticate as admin from the local network.

Mitigation and Prevention

To address CVE-2020-8797, follow these mitigation strategies:

Immediate Steps to Take

Disable the telnetd service if not required.
Implement strong authentication mechanisms.

Long-Term Security Practices

Regularly monitor and update system configurations.
Conduct security audits to identify and address vulnerabilities.

Patching and Updates

Apply patches and updates provided by the vendor to fix the vulnerability.