CVE-2017-17217 in DP300
Summary
by MITRE
Media Gateway Control Protocol (MGCP) in Huawei DP300 V500R002C00; RP200 V500R002C00SPC200; V600R006C00; TE30 V100R001C10; V500R002C00; V600R006C00; TE40 V500R002C00; V600R006C00; TE50 V500R002C00; V600R006C00; TE60 V100R001C10; V500R002C00; V600R006C00 has an out-of-bounds write vulnerability. An unauthenticated, remote attacker crafts malformed packets with specific parameter to the affected products. Due to insufficient validation of packets, successful exploitation may impact availability of product service.
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Analysis
by VulDB Data Team • 02/17/2023
The vulnerability identified as CVE-2017-17217 affects Huawei communication devices implementing the Media Gateway Control Protocol (MGCP) across multiple product lines including DP300, RP200, TE30, TE40, TE50, and TE60 models. This represents a critical security flaw that exposes these network infrastructure components to remote exploitation without requiring authentication credentials. The affected systems operate using MGCP version 1.0 which governs the communication between media gateways and call controllers in VoIP environments, making these devices essential for voice and video communication services in enterprise and telecommunications networks.
The technical flaw manifests as an out-of-bounds write vulnerability within the packet processing logic of the MGCP implementation. When malformed packets containing specific parameter values are transmitted to the affected Huawei devices, the system fails to properly validate the incoming data structures before processing them. This inadequate input validation allows an attacker to craft malicious packets that exceed the allocated memory boundaries during packet parsing operations. The vulnerability stems from insufficient bounds checking mechanisms in the MGCP protocol handler, which directly violates security principles outlined in CWE-129 and CWE-787, both of which address improper input validation and out-of-bounds writes respectively. The absence of proper parameter validation creates a pathway for attackers to manipulate memory locations beyond their intended boundaries.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise the entire communication infrastructure. Successful exploitation can result in complete service unavailability, forcing network administrators to restart affected devices and potentially causing significant downtime for voice and video services. In enterprise environments where these devices form the backbone of communication systems, such an attack could severely impact business operations and customer service delivery. The remote nature of the attack means that adversaries can target these devices from outside the network perimeter without requiring physical access or prior authentication, making the vulnerability particularly dangerous in environments where network segmentation is not properly implemented.
Organizations should implement immediate mitigation strategies to address this vulnerability, including network segmentation to isolate affected devices from untrusted networks, deployment of network access control measures, and implementation of intrusion detection systems to monitor for suspicious MGCP traffic patterns. The affected Huawei devices should be updated with the latest security patches provided by the vendor, and network administrators should consider disabling MGCP functionality if it is not essential for operations. Additionally, implementing proper network monitoring and logging for MGCP traffic can help detect potential exploitation attempts. According to ATT&CK framework, this vulnerability aligns with techniques such as T1071.004 for application layer protocol usage and T1499.004 for network disruption, emphasizing the need for comprehensive network security controls. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other network protocols and devices within the infrastructure.