CVE-2022-38755 – Remote Unauthenticated User Enumeration Vulnerability in Micro Focus Filr

A recently identified vulnerability, CVE-2022-38755, affects Micro Focus Filr in versions prior to 4.3.1.1. This vulnerability allows a remote unauthenticated attacker to enumerate valid users of the system. This discovery presents crucial security risks for organizations using Micro Focus Filr, and battling this vulnerability should be a top priority for affected users.

Micro Focus Filr is a popular file management and collaboration solution used by many organizations to securely share and manage documents among their users. The vulnerability, if exploited, could lead to sensitive information disclosure about system users, allowing cybercriminals to gain unauthorized access to user accounts, compromising business and user data.

Details

CVE-2022-38755 refers to a vulnerability that enables a remote unauthenticated attacker to enumerate valid users of Micro Focus Filr. This issue affects Micro Focus Filr versions prior to the 4.3.1.1 release.

Remote unauthenticated user enumeration allows attackers to identify valid usernames on a system, which may give them further insights into an organization's infrastructure or internal naming conventions. With this information, attackers could potentially access sensitive data or target specific users for a more targeted attack.

A proof-of-concept code snippet for this vulnerability could look like the following

import requests
import json

target_url = "https://TARGET_URL";
users_to_check = ["user1", "user2", "user3"]

for user in users_to_check:
    payload = {
        "name": user,
        "password": "InvalidPassword"
    }

    response = requests.post(target_url, json=payload)

    if response.status_code == 401 and "Invalid Credentials" in response.text:
        print(f"Valid user found: {user}")
    else:
        print(f"User not found: {user}")

Please note that this is just an example and should not be used for malicious purposes.

Exploit Details

The vulnerability allows remote unauthenticated attackers to enumerate valid users of Micro Focus Filr systems, potentially disclosing sensitive user information. By exploiting this flaw, a threat actor could gain further insights into the target organization's userbase, including employees, customers, or other stakeholders linked to its infrastructure.

Links to Original References

- CVE Entry on Micro Focus Security Advisory
- Micro Focus Security Advisory

Recommendations

Micro Focus has issued a patch to fix this vulnerability in Filr 4.3.1.1. It is strongly recommended that organizations using affected versions of Micro Focus Filr update their systems to the latest, secured version. Implementing robust security measures, monitoring and auditing access logs for any unusual activity, and strengthening password policies can help prevent unauthorized access attempts by attackers.

Closing

CVE-2022-38755 is a serious vulnerability affecting Micro Focus Filr users. Organizations should prioritize the necessary actions to mitigate and prevent this security issue. Staying informed about security vulnerabilities, threats, and updates is crucial to keeping an organization's infrastructure secure and robust. Regularly reviewing security configurations and updating software to the latest versions can go a long way in defending against such vulnerabilities.

Timeline

Published on: 11/21/2022 17:15:00 UTC
Last modified on: 11/23/2022 17:53:00 UTC