CVE-2017-17310 in DP300
Summary
by MITRE
Electronic Numbers to URI Mapping (ENUM) module in some Huawei products DP300 V500R002C00, RP200 V600R006C00, TE30 V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C10, V500R002C00, V600R006C00 have a buffer error vulnerability. An unauthenticated, remote attacker has to control the peer device and send specially crafted ENUM packets to the affected products. Due to insufficient verification of some values in the packets, successful exploit may cause buffer error and some services abnormal.
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Analysis
by VulDB Data Team • 03/03/2023
The vulnerability identified as CVE-2017-17310 affects the Electronic Numbers to URI Mapping (ENUM) module in several Huawei communication devices including DP300, RP200, TE30, TE40, TE50, and TE60 models across multiple firmware versions. This represents a critical buffer overflow weakness that resides within the ENUM processing functionality of these voice over internet protocol (VoIP) and video conferencing systems. The vulnerability stems from inadequate input validation mechanisms within the ENUM packet handling subsystem, where the system fails to properly verify the length and content of incoming data packets before processing them.
The technical flaw manifests as a buffer error condition that occurs when the ENUM module receives specially crafted packets from a remote attacker who has gained control of a peer device within the network. This attack vector requires the adversary to establish a position within the network topology to control a legitimate peer device that can communicate with the vulnerable Huawei products. The insufficient verification of packet values allows malicious data to overflow buffer boundaries, potentially leading to memory corruption and system instability. This vulnerability operates at the network protocol level and specifically targets the ENUM service implementation that translates telephone numbers into internet resource identifiers for VoIP communications.
From an operational perspective, successful exploitation of this buffer error vulnerability can result in significant service disruption and potential system compromise. The affected Huawei devices may experience abnormal service behavior including system crashes, restarts, or denial of service conditions that impact voice and video communication capabilities. The vulnerability's remote nature and requirement for unauthenticated access make it particularly concerning for enterprise communication networks where such devices typically operate in exposed network segments. Organizations relying on these systems for business-critical communications face potential operational downtime and security risk exposure, as the vulnerability can be leveraged to disrupt essential telephony services.
The vulnerability aligns with CWE-121, which describes stack-based buffer overflow conditions, and represents a classic example of insufficient input validation in network protocol implementations. From an ATT&CK framework perspective, this vulnerability maps to techniques involving remote code execution and privilege escalation through network-based attacks. The attack requires the adversary to first compromise a peer device to establish a foothold within the network, then leverage the buffer overflow to gain control over the target system. Organizations should implement immediate mitigation strategies including firmware updates from Huawei, network segmentation to isolate vulnerable devices, and monitoring for unusual ENUM traffic patterns. Network administrators should also consider disabling ENUM services if not actively required, as this represents a reduction in attack surface. The vulnerability demonstrates the importance of proper input validation and buffer management in network infrastructure devices, particularly those handling real-time communication protocols where service availability is critical for business operations.