CVE-2022-24630 in Device Manager Express
Summary
by MITRE • 05/30/2023
An issue was discovered in AudioCodes Device Manager Express through 7.8.20002.47752. BrowseFiles.php allows a ?cmd=ssh POST request with an ssh_command field that is executed.
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Analysis
by VulDB Data Team • 10/28/2024
The vulnerability identified as CVE-2022-24630 represents a critical remote code execution flaw within the AudioCodes Device Manager Express platform version 7.8.20002.47752 and earlier. This issue resides in the BrowseFiles.php component which processes HTTP POST requests containing a command parameter named cmd=ssh. The vulnerability stems from improper input validation and sanitization mechanisms that fail to adequately filter user-supplied data before executing system commands. When an attacker submits a malicious POST request with the ssh_command field, the application directly incorporates this input into system execution contexts without proper security controls, creating a pathway for arbitrary code execution on the underlying operating system. This flaw fundamentally violates secure coding principles and represents a classic command injection vulnerability that can be exploited from remote locations without requiring authentication.
The technical exploitation of this vulnerability occurs through the manipulation of the BrowseFiles.php script which accepts HTTP POST requests with specific parameters. When the cmd=ssh parameter is present in the request, the application interprets the ssh_command field as executable input, bypassing normal security boundaries and access controls. This behavior aligns with CWE-78, which specifically addresses improper neutralization of special elements used in OS commands, and demonstrates how inadequate input validation can lead to complete system compromise. The vulnerability exists in the application's web interface layer where user input flows directly into system command execution without proper sanitization or context-aware escaping mechanisms. The flaw allows attackers to execute arbitrary shell commands with the privileges of the web application user, typically running with elevated permissions on the server.
The operational impact of this vulnerability is severe and potentially catastrophic for organizations relying on AudioCodes Device Manager Express for network infrastructure management. Successful exploitation enables attackers to gain complete control over the affected system, allowing them to install malware, exfiltrate sensitive data, modify network configurations, or establish persistent backdoors. The vulnerability affects the core management functionality of the device, potentially compromising the entire network infrastructure that relies on AudioCodes devices for voice and data communications. Attackers can leverage this vulnerability to perform reconnaissance activities, escalate privileges, and move laterally within the network environment. This type of vulnerability directly impacts the confidentiality, integrity, and availability of critical infrastructure services, making it particularly dangerous for enterprise environments where network reliability and security are paramount. The vulnerability also falls under ATT&CK technique T1059.001, which covers command and scripting interpreter execution, and T1078.004, which addresses valid accounts with compromised credentials.
Organizations should immediately implement multiple layers of mitigation strategies to address this vulnerability. The most effective immediate solution involves applying the vendor-provided security patches and updates as soon as they become available, which typically include input validation fixes and proper sanitization of user-supplied parameters. Network segmentation and firewall rules should be implemented to restrict access to the affected BrowseFiles.php endpoint, limiting exposure to trusted network segments only. Web application firewalls should be configured to detect and block suspicious POST requests containing command execution patterns. Additionally, implementing principle of least privilege access controls and disabling unnecessary services can reduce the attack surface. Regular security assessments and penetration testing should be conducted to identify similar vulnerabilities in other components of the network infrastructure. The vulnerability also highlights the importance of regular security audits and vulnerability scanning processes to identify and remediate similar command injection flaws across the entire IT ecosystem, as these types of vulnerabilities are commonly found in legacy systems and can be exploited with relatively simple attack vectors.