CVE-2005-3724 in Prestige 2000w V.1voip Wi-fi Phone
Summary
by MITRE
Zyxel P2000W Version 1 VOIP WIFI Phone Wj.00.10 allows remote attackers to obtain sensitive information and possibly cause a denial of service via a direct connection to UDP port 9090, which is undocumented and does not require authentication.
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Analysis
by VulDB Data Team • 07/27/2017
The CVE-2005-3724 vulnerability affects the Zyxel P2000W Version 1 VOIP WIFI Phone, specifically exposing an undocumented UDP port 9090 that serves as a critical security weakness in the device's network architecture. This vulnerability represents a classic example of insecure network service exposure where the device fails to properly secure its communication channels, creating an attack surface that remote adversaries can exploit without authentication requirements. The vulnerability falls under the category of information disclosure and denial of service, both of which are categorized under CWE-200 for information exposure and CWE-400 for unspecified denial of service conditions.
The technical flaw manifests through the unauthenticated access to UDP port 9090, which serves as a backdoor channel for attackers to extract sensitive information from the device. This undocumented port operates without proper authentication mechanisms, allowing any remote attacker to establish a direct connection and potentially access internal system information, configuration data, or communication parameters. The vulnerability demonstrates poor security design principles where network services are not properly secured or documented, creating an environment where attackers can leverage the device's own communication infrastructure against it. This type of vulnerability is particularly dangerous because it bypasses normal authentication procedures and operates at the network layer without requiring any credentials or prior access.
The operational impact of this vulnerability extends beyond simple information disclosure to include potential system compromise and service disruption. Attackers could exploit this weakness to gain insights into the device's internal configuration, network topology, or communication protocols, which could then be used to launch more sophisticated attacks against the network. The lack of authentication requirements means that any attacker with network access can potentially cause denial of service conditions by sending malformed packets to the vulnerable port, disrupting the phone's normal operation or even rendering it inoperable. This vulnerability directly impacts the confidentiality, integrity, and availability of the network service, making it a critical concern for network administrators.
Security mitigations for this vulnerability should focus on immediate network segmentation and access control measures to prevent unauthorized access to the device. Network administrators should implement firewall rules to block access to UDP port 9090 from external networks and restrict access to only trusted internal systems. The device should be updated with firmware patches if available, though given the age of this vulnerability, such updates may not be forthcoming. Additionally, network monitoring should be implemented to detect unusual traffic patterns on this port, and regular security audits should be conducted to identify other undocumented services that may exist on network devices. This vulnerability aligns with ATT&CK technique T1046 for network service scanning and T1059 for command and scripting interpreter, demonstrating how insecure network services can be leveraged for reconnaissance and exploitation activities. Organizations should also consider implementing network access control lists and disabling unnecessary services to reduce the attack surface of networked devices.