CVE-2017-17284 in DP300
Summary
by MITRE
Huawei DP300 V500R002C00, RP200 V500R002C00, V600R006C00, TE30 V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C01, V100R001C10, V500R002C00, V600R006C00 have a resource management error vulnerability. A remote attacker may send huge number of specially crafted SIP messages to the affected products. Due to improper handling of some value in the messages, successful exploit will cause some services abnormal.
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Analysis
by VulDB Data Team • 02/08/2023
This vulnerability affects multiple Huawei video conferencing and collaboration devices including DP300, RP200, TE30, TE40, TE50, and TE60 models across various software versions. The issue stems from a resource management error that manifests when the affected devices receive a large volume of specially crafted SIP (Session Initiation Protocol) messages. This represents a classic denial of service scenario where malicious actors can overwhelm system resources through carefully constructed network traffic.
The technical flaw lies in the improper handling of specific values within SIP messages, which creates a resource management error in the device's processing pipeline. When these malformed messages are received, the system fails to properly validate or sanitize the incoming data, leading to abnormal service behavior that can degrade or completely disrupt the device's functionality. This vulnerability operates at the protocol level, specifically targeting the SIP message handling mechanisms that govern video conferencing sessions and device communications.
From an operational perspective, this vulnerability presents a significant risk to enterprise communication infrastructure as it allows remote attackers to disrupt critical video conferencing services without requiring authentication or physical access to the devices. The impact extends beyond simple service disruption, potentially affecting business continuity and collaborative workflows that depend on reliable video conferencing systems. The vulnerability's remote exploitability means that attackers can target these devices from anywhere on the network, making it particularly dangerous in enterprise environments where such devices may be exposed to external traffic.
The attack vector specifically involves sending a large number of crafted SIP messages, which suggests this vulnerability could be exploited through automated scanning tools or botnets capable of generating high-volume traffic patterns. This aligns with common attack patterns documented in the attack tree framework where resource exhaustion attacks are classified under resource consumption threats. Organizations should consider this vulnerability in their threat modeling exercises and assess their network segmentation strategies to limit exposure of these devices to untrusted networks.
Mitigation strategies should include implementing network-level filtering to restrict SIP traffic to trusted sources, applying firmware updates from Huawei that address this specific resource management error, and deploying intrusion detection systems capable of identifying and blocking suspicious SIP message patterns. Additionally, organizations should consider network segmentation to isolate these devices from general network traffic and implement monitoring solutions to detect abnormal service behavior that might indicate exploitation attempts. This vulnerability highlights the importance of proper input validation and resource management in embedded systems and aligns with common security practices outlined in the CWE catalog for resource management errors.