Critical Vulnerability Information Vulnerability Identifier: CVE ID: CVE-2021-4283 VDB ID: VDB-216872 GCVE ID: GCVE-100-216872 Vulnerability Overview: Vulnerability Name: FreePBX Voicemail XSS Vulnerability in settings/views/ssettings.php "key" Parameter in Versions Prior to 14.0.6.25 Vulnerability Description: A vulnerability, described as an issue, affects FreePBX voicemail. It resides in the "key" parameter within an unknown function in the file settings/views/ssettings.php, which can be remotely manipulated, leading to Cross-Site Scripting (XSS) attacks. CVE Identifier: CVE-2021-4283 Vulnerability Details: Affected Products and Versions: FreePBX voicemail (versions prior to 14.0.6.25) Vulnerability Type: Cross-Site Scripting (XSS) Risk Level: Issue Level CWE ID: CWE-79 (XSS) Impact: User-controllable input is not properly neutralized or neutralized, resulting in web pages served to other users over the network being affected, impacting integrity. Exploitation and Mitigation: Disclosure Date: December 27, 2022 CVE Handling: CVE-2021-4283 Exploitation Requirement: User interaction required Technical Details: Known, but no ready-to-use exploit available Mitigation Recommendation: Upgrade to the latest version to eliminate the vulnerability. The fixed version is 14.0.6.25, and the patch is available on github.com. Identifying Potential Targets: Search Technique: Use Google Hacking with the query “inurl:views/ssettings.php” to identify potential vulnerable targets.