CVE-2005-3722 in IP5000 VOIP WIFI Phone
Summary
by MITRE
The SNMP v1/v2c daemon in Hitachi IP5000 VOIP WIFI Phone 1.5.6 allows remote attackers to gain read or write access to system configuration using arbitrary SNMP credentials.
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Analysis
by VulDB Data Team • 07/26/2017
The vulnerability identified as CVE-2005-3722 represents a critical security flaw in the SNMP implementation of Hitachi IP5000 VOIP WIFI Phone version 1.5.6. This issue stems from inadequate authentication mechanisms within the SNMP v1/v2c daemon that operates on the device, allowing unauthorized remote actors to bypass legitimate credential verification processes. The vulnerability manifests through the daemon's failure to properly validate SNMP community strings, enabling attackers to use arbitrary credentials to establish unauthorized access to the phone's configuration management interfaces. This weakness directly compromises the fundamental security model of the device, as SNMP is traditionally designed to provide controlled access to network device information and configuration parameters.
The technical nature of this vulnerability aligns with CWE-287, which addresses improper authentication issues in network services. The flaw exists in the SNMP daemon's credential validation logic where it accepts any provided SNMP community string without proper verification against legitimate credentials. This represents a classic case of weak authentication control where the system fails to enforce proper access controls based on the principle of least privilege. The vulnerability affects both read and write operations, meaning attackers can not only extract sensitive configuration data but also modify system parameters, potentially leading to complete system compromise. The use of SNMP v1 and v2c protocols exacerbates the issue since these versions lack modern encryption and authentication mechanisms, making them particularly susceptible to credential manipulation attacks.
Operationally, this vulnerability presents significant risks to organizations relying on Hitachi IP5000 VOIP WIFI Phones for their communication infrastructure. Remote attackers can exploit this weakness to gain unauthorized access to voice communication systems, potentially leading to eavesdropping on conversations, modification of call routing, or disruption of services. The impact extends beyond simple information disclosure as the ability to perform write operations could enable attackers to reconfigure the phone to redirect calls to malicious numbers or disable communication capabilities entirely. This vulnerability can be exploited as part of broader network reconnaissance activities, potentially serving as an initial access point for lateral movement within enterprise networks where VoIP devices are integrated into larger communication infrastructures.
From a threat actor perspective, this vulnerability maps to several ATT&CK techniques including T1105 for remote access and T1078 for valid accounts usage. The attack surface is particularly concerning given that SNMP is commonly enabled by default on many network devices, and the vulnerability affects a specific version of a widely deployed VoIP phone system. Organizations should consider implementing network segmentation to isolate VoIP devices from critical business networks, deploying SNMP access control lists to restrict SNMP traffic, and conducting regular vulnerability assessments to identify unpatched devices. The remediation approach requires immediate patching of the affected device firmware to implement proper SNMP credential validation and authentication mechanisms. Additionally, network administrators should disable SNMP v1 and v2c protocols where possible and migrate to SNMP v3 which provides stronger authentication and encryption capabilities. This vulnerability underscores the importance of proper security configuration management and the need for regular firmware updates to address known security issues in networked devices.