CVE-2022-26953 : Security Advisory and Response

Digi Passport Firmware through version 1.5.1,1 is impacted by a buffer overflow vulnerability that allows an attacker to trigger a buffer overflow by supplying a string in the 'page' parameter for the 'reboot.asp' endpoint.

Understanding CVE-2022-26953

This section delves into the details of the CVE-2022-26953 vulnerability.

What is CVE-2022-26953?

CVE-2022-26953 is a buffer overflow vulnerability found in Digi Passport Firmware through version 1.5.1,1. It enables an attacker to execute a buffer overflow attack through specially crafted input.

The Impact of CVE-2022-26953

The presence of this vulnerability allows malicious actors to manipulate the 'page' parameter for the 'reboot.asp' endpoint, resulting in a buffer overflow. This could potentially lead to arbitrary code execution or a system crash.

Technical Details of CVE-2022-26953

In this section, we explore the technical aspects of CVE-2022-26953.

Vulnerability Description

The vulnerability arises due to a lack of proper input validation in the affected firmware version, enabling an attacker to exploit a buffer overflow when manipulating the 'page' parameter.

Affected Systems and Versions

Digi Passport Firmware versions up to and including 1.5.1,1 are affected by this vulnerability, exposing systems running these versions to the risk of exploitation.

Exploitation Mechanism

By supplying a crafted string in the 'page' parameter of the 'reboot.asp' endpoint, threat actors can trigger the buffer overflow, potentially leading to unauthorized access or denial of service.

Mitigation and Prevention

This section covers the necessary steps to mitigate and prevent exploitation of CVE-2022-26953.

Immediate Steps to Take

Organizations using Digi Passport Firmware should update to the latest version (1.5.2) to patch the vulnerability.
Implement network security controls to restrict access to the 'reboot.asp' endpoint.

Long-Term Security Practices

Regularly monitor security advisories from Digi and apply firmware updates promptly.
Conduct security assessments to identify and remediate vulnerabilities in the infrastructure.

Patching and Updates

Stay informed about security patches and updates released by Digi for the Digi Passport Firmware.
Test updates in a controlled environment before deploying them to production systems.