CVE-2021-40856 Explained : Impact and Mitigation

This CVE article provides details about an Authentication Bypass vulnerability in Auerswald COMfortel 1400 IP and 2600 IP devices.

Understanding CVE-2021-40856

This section delves into the specifics of the CVE-2021-40856 vulnerability.

What is CVE-2021-40856?

Auerswald COMfortel 1400 IP and 2600 IP devices before 2.8G are susceptible to an Authentication Bypass via the /about/../ substring.

The Impact of CVE-2021-40856

This vulnerability allows attackers to bypass authentication on the affected devices, potentially leading to unauthorized access to sensitive information.

Technical Details of CVE-2021-40856

In this section, we explore the technical aspects of the CVE-2021-40856 vulnerability.

Vulnerability Description

Auerswald COMfortel 1400 IP and 2600 IP devices before 2.8G allow an Authentication Bypass via the /about/../ substring.

Affected Systems and Versions

Affected Systems: Auerswald COMfortel 1400 IP and 2600 IP devices
Vulnerable Versions: Before 2.8G

Exploitation Mechanism

The vulnerability can be exploited by manipulating the /about/../ substring, enabling unauthorized access to the devices.

Mitigation and Prevention

This section outlines steps to mitigate and prevent the CVE-2021-40856 vulnerability.

Immediate Steps to Take

Upgrade the affected devices to version 2.8G or newer to patch the Authentication Bypass vulnerability.
Implement network segmentation to limit access to vulnerable devices.

Long-Term Security Practices

Regularly update firmware and software to ensure protection against known vulnerabilities.
Conduct security assessments and penetration testing to identify and address potential security gaps.

Patching and Updates

Apply security patches provided by Auerswald promptly to address the Authentication Bypass vulnerability.