CVE-2006-0302 in P2000W Wifi Phone
Summary
by MITRE
ZyXel P2000W VoIP 802.11b Wireless Phone running firmware WV.00.02 allows remote attackers to obtain sensitive information, such as MAC address and software version, by directly accessing UDP port 9090.
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Analysis
by VulDB Data Team • 01/11/2019
The ZyXel P2000W VoIP wireless phone represents a significant security vulnerability through its exposure of sensitive system information via unsecured network services. This device operates with firmware version WV.00.02 and presents a critical flaw in its network configuration that allows unauthorized remote access to system details through UDP port 9090. The vulnerability stems from the device's failure to implement proper authentication mechanisms or access controls for its diagnostic and management interfaces, creating an attack surface that adversaries can exploit without requiring valid credentials or network privileges.
The technical flaw manifests as an insecure service implementation that exposes system metadata through a UDP-based interface. When attackers connect to UDP port 9090, they can retrieve sensitive information including the device's MAC address, software version, and potentially other system identifiers that could be used for further exploitation. This vulnerability directly maps to CWE-200, which describes the exposure of sensitive information to an unauthorized actor, and represents a clear violation of information hiding principles in network device design. The lack of proper access control mechanisms means that any remote attacker with network connectivity can obtain this information without authentication, creating a significant risk for network security posture.
The operational impact of this vulnerability extends beyond simple information disclosure, as the exposed MAC address and software version data can serve as foundational elements for more sophisticated attacks. Attackers can use this information to perform network reconnaissance, identify potential targets for additional exploits, or conduct targeted attacks against known vulnerabilities in specific firmware versions. The exposure of software version information particularly concerning as it enables attackers to determine if the device is running vulnerable firmware that may be susceptible to other exploits. This vulnerability creates an initial foothold for attackers to conduct more comprehensive reconnaissance activities, potentially leading to privilege escalation or complete device compromise. The attack vector is particularly dangerous because it requires no authentication, making it trivial for remote attackers to gather intelligence.
Mitigation strategies for this vulnerability should focus on immediate network segmentation and access control implementation. Network administrators should block access to UDP port 9090 through firewall rules and access control lists to prevent unauthorized remote access to the diagnostic interface. The device should be configured to disable unnecessary services and ports that are not required for normal operation, following the principle of least privilege. Additionally, regular firmware updates should be implemented to address known vulnerabilities, though in this case, the device may no longer be supported by the vendor. Network monitoring should be enhanced to detect unusual access patterns to this port, and regular security assessments should be conducted to identify similar vulnerabilities in other network devices. This vulnerability also highlights the importance of secure configuration practices and the need for network administrators to regularly audit device configurations to ensure that only essential services remain accessible. The incident underscores the critical need for implementing proper network security controls and maintaining awareness of the attack surface presented by network-connected devices, particularly those with default configurations that expose diagnostic interfaces to the internet.