CVE-2017-15317 in AR120-S
Summary
by MITRE
AR120-S V200R006C10, V200R007C00, V200R008C20, V200R008C30; AR1200 V200R006C10, V200R006C13, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30; AR1200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30; AR150 V200R006C10, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30; AR150-S V200R006C10, V200R007C00, V200R008C20, V200R008C30; AR160 V200R006C10, V200R006C12, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30; AR200 V200R006C10, V200R007C00, V200R007C01, V200R008C20, V200R008C30; AR200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30; AR2200 V200R006C10, V200R006C13, V200R006C16, V200R007C00, V200R007C01, V200R007C02, V200R008C20, V200R008C30; AR2200-S V200R006C10, V200R007C00, V200R008C20, V200R008C30; AR3200 V200R006C10, V200R006C11, V200R007C00, V200R007C01, V200R007C02, V200R008C00, V200R008C10, V200R008C20, V200R008C30; AR510 V200R006C10, V200R006C12, V200R006C13, V200R006C15, V200R006C16, V200R006C17, V200R007C00, V200R008C20, V200R008C30; SRG1300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30; SRG2300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30; SRG3300 V200R006C10, V200R007C00, V200R008C20, V200R008C30 have an input validation vulnerability in Huawei multiple products. Due to the insufficient input validation, an unauthenticated, remote attacker may craft a malformed Stream Control Transmission Protocol (SCTP) packet and send it to the device, causing the device to read out of bounds and restart.
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Analysis
by VulDB Data Team • 01/18/2023
This vulnerability represents a critical input validation flaw affecting multiple Huawei networking devices including AR and SRG series routers and switches. The issue stems from inadequate validation of Stream Control Transmission Protocol (SCTP) packets, which allows remote attackers to exploit a buffer over-read condition through carefully crafted malformed packets. The vulnerability affects numerous firmware versions across various product lines, indicating a widespread exposure that could impact enterprise and service provider networks relying on these devices for critical infrastructure connectivity.
The technical exploitation occurs when an unauthenticated attacker sends a specially crafted SCTP packet that triggers an out-of-bounds memory read condition within the device's network processing stack. This memory corruption leads to a system restart or crash, creating a denial of service condition that can disrupt network services and potentially provide an entry point for further attacks. The vulnerability's remote nature means attackers do not require physical access or network credentials to exploit the flaw, making it particularly dangerous in exposed network environments.
From an operational impact perspective, this vulnerability can result in significant network disruption as affected devices may experience repeated restarts, leading to service outages and potential cascading failures in network infrastructure. The denial of service condition can be particularly damaging in mission-critical environments where network availability is paramount. Organizations may face challenges in identifying affected devices due to the wide range of supported firmware versions and product models, complicating remediation efforts.
Security professionals should implement immediate network segmentation and monitoring to detect anomalous SCTP traffic patterns that may indicate exploitation attempts. Device firmware updates from Huawei should be prioritized to address this vulnerability, with particular attention to the affected firmware versions listed in the CVE description. Network administrators should also consider implementing access control lists to filter SCTP traffic where it is not required, reducing the attack surface. This vulnerability aligns with CWE-125 (Out-of-bounds Read) and may be categorized under ATT&CK technique T1499.004 (Endpoint Denial of Service) in the context of network infrastructure attacks.