CVE-2018-5455 : What You Need to Know

The Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and earlier versions contain a vulnerability known as the Reliance on Cookies without Validation and Integrity Checking issue. This flaw enables the use of a cookie parameter consisting solely of numbers, which can be exploited by an attacker to circumvent authentication through a brute force attack. By doing so, the attacker can gain unauthorized access to the device's functions.

Understanding CVE-2018-5455

This CVE identifies a security vulnerability in the Moxa OnCell G3100-HSPA Series that allows attackers to bypass authentication using a brute force attack.

What is CVE-2018-5455?

The vulnerability in the Moxa OnCell G3100-HSPA Series allows attackers to exploit a cookie parameter with only numbers to gain unauthorized access to the device.

The Impact of CVE-2018-5455

The vulnerability enables attackers to bypass authentication mechanisms, potentially leading to unauthorized access to the device's functionalities.

Technical Details of CVE-2018-5455

The following technical details outline the specifics of the vulnerability.

Vulnerability Description

A Reliance on Cookies without Validation and Integrity Checking issue was discovered in Moxa OnCell G3100-HSPA Series version 1.4 Build 16062919 and prior. The application allows a cookie parameter to consist of only digits, allowing an attacker to perform a brute force attack bypassing authentication and gaining access to device functions.

Affected Systems and Versions

Product: Moxa OnCell G3100-HSPA Series
Version: 1.4 Build 16062919 and earlier

Exploitation Mechanism

The vulnerability can be exploited by attackers using a cookie parameter with only numbers, enabling them to bypass authentication through brute force attacks.

Mitigation and Prevention

Protecting systems from CVE-2018-5455 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update to the latest version of the Moxa OnCell G3100-HSPA Series that addresses the vulnerability.
Implement strong password policies to mitigate brute force attacks.

Long-Term Security Practices

Regularly monitor and audit authentication logs for unusual activities.
Conduct security training for users to recognize and report suspicious login attempts.

Patching and Updates

Apply security patches provided by the vendor promptly to address the vulnerability and enhance system security.