CVE-2022-44284 in FXO Analog VoIP Gateway DAG2000-16O
Summary
by MITRE • 11/28/2022
Dinstar FXO Analog VoIP Gateway DAG2000-16O is vulnerable to Cross Site Scripting (XSS).
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Analysis
by VulDB Data Team • 04/26/2025
The CVE-2022-44284 vulnerability affects the Dinstar FXO Analog VoIP Gateway DAG2000-16O device, which represents a critical security flaw in telecommunications infrastructure. This particular gateway serves as a bridge between traditional analog phone systems and modern VoIP networks, making it a potential entry point for attackers targeting enterprise communication systems. The device operates within the industrial internet of things ecosystem, where security considerations are paramount due to the sensitive nature of communication data and the potential for cascading failures across networked systems.
The technical flaw manifests as a cross site scripting vulnerability that allows malicious actors to inject malicious scripts into the device's web interface. This vulnerability stems from insufficient input validation and output encoding mechanisms within the gateway's user authentication and configuration pages. When users interact with the web-based management interface, the device fails to properly sanitize user-supplied data, enabling attackers to craft malicious payloads that can execute within the context of other users' browsers. The vulnerability is categorized under CWE-79 as a failure to sanitize user input, which directly maps to the web application security principle of preventing injection attacks that can lead to unauthorized access and data compromise.
The operational impact of this vulnerability extends beyond simple script execution, as it can enable attackers to establish persistent access to the VoIP gateway and potentially escalate privileges within the network. An attacker could leverage this vulnerability to steal administrative credentials, modify gateway configurations, or redirect calls to malicious destinations. The attack surface is particularly concerning given that the DAG2000-16O device typically operates in enterprise environments where it may serve as a critical communication hub. The vulnerability could be exploited through various attack vectors including phishing emails, compromised network connections, or direct web interface access. According to ATT&CK framework, this vulnerability maps to T1566.001 (Phishing: Spearphishing Attachment) and T1071.004 (Application Layer Protocol: DNS) as attackers might use the compromised device to establish command and control channels or exfiltrate data through DNS tunneling.
Mitigation strategies for CVE-2022-44284 should encompass both immediate remediation and long-term security enhancements. Organizations must prioritize applying vendor-provided firmware updates and patches as soon as they become available, as these typically address the root cause of the input validation deficiencies. Network segmentation and firewall rules should be implemented to restrict access to the device's web interface to authorized administrative personnel only, thereby reducing the attack surface. Additional protective measures include implementing web application firewalls to monitor and filter traffic to the gateway's management interface, conducting regular security audits of networked devices, and establishing robust monitoring protocols to detect unusual access patterns. The vulnerability also highlights the importance of secure configuration management practices, as many organizations fail to properly secure default administrative credentials and enable unnecessary services. According to NIST cybersecurity guidelines, this vulnerability requires immediate attention as part of a comprehensive vulnerability management program, with regular assessment of networked devices to identify similar weaknesses in other telecommunications equipment that may be equally vulnerable to similar injection attacks.