CVE-2022-40977 : Vulnerability Insights and Analysis

A path traversal vulnerability was discovered in Pilz PASvisu Server before version 1.12.0, allowing an unauthenticated remote attacker to trigger arbitrary file writes by utilizing a zipped, malicious configuration file ('zip-slip'). This vulnerability does not impact confidentiality or availability.

Understanding CVE-2022-40977

This section delves into the details of CVE-2022-40977, highlighting the vulnerability's impact and affected systems.

What is CVE-2022-40977?

CVE-2022-40977 is a path traversal vulnerability in Pilz PASvisu Server that enables unauthenticated remote attackers to perform arbitrary file writes using a zipped, malicious configuration file ('zip-slip'). The vulnerability does not compromise confidentiality or availability.

The Impact of CVE-2022-40977

The impact of CVE-2022-40977 lies in its potential for unauthorized file manipulation, posing a risk to file integrity without affecting confidentiality or availability.

Technical Details of CVE-2022-40977

This section delves into the technical aspects of CVE-2022-40977, including vulnerability description, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability in Pilz PASvisu Server before version 1.12.0 allows unauthenticated remote attackers to trigger arbitrary file writes via a zipped, malicious configuration file ('zip-slip').

Affected Systems and Versions

PASvisu version 1.0.0 is affected with versions less than 1.12.0.
PMI v5xx (265507 + 265512) version 1.0.0 is affected with versions less than or equal to 1.3.58.
PMI v7xx (266704 + 266707) version 1.0.0 is affected with versions less than 2.2.0.
PMI v8xx (266807, 266812, 266815) version 1.0.0 is affected with versions less than 1.6.102.

Exploitation Mechanism

The vulnerability can be exploited by an unauthenticated remote attacker utilizing a zipped, malicious configuration file to perform arbitrary file writes ('zip-slip').

Mitigation and Prevention

In this section, we discuss the steps to mitigate and prevent the exploitation of CVE-2022-40977.

Immediate Steps to Take

Update Pilz PASvisu Server to version 1.12.0 or higher to address the vulnerability and prevent unauthorized file writes.

Long-Term Security Practices

Regularly monitor for security advisories and updates from Pilz to stay informed about potential vulnerabilities.

Patching and Updates

Apply security patches provided by Pilz promptly to mitigate the risk of exploitation and maintain system security.