CVE-2017-17294 in ARXXXX
Summary
by MITRE
Huawei 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, AR3600 V200R006C10, V200R007C00, V200R007C01, V200R008C20, AR510 V200R006C10, V200R006C12, V200R006C13, V200R006C15, V200R006C16, V200R006C17, V200R007C00, V200R008C20, V200R008C30, DP300 V500R002C00, MAX PRESENCE V100R001C00, NetEngine16EX V200R006C10, V200R007C00, V200R008C20, V200R008C30, RP200 V500R002C00, V600R006C00, SRG1300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30, SRG2300 V200R006C10, V200R007C00, V200R007C02, V200R008C20, V200R008C30, SRG3300 V200R006C10, V200R007C00, V200R008C20, V200R008C30, TE30 V100R001C02, V100R001C10, V500R002C00, V600R006C00, TE40 V500R002C00, V600R006C00, TE50 V500R002C00, V600R006C00, TE60 V100R001C01, V100R001C10, V500R002C00, V600R006C00, TP3106 V100R002C00, TP3206 V100R002C00, V100R002C10 have a null pointer dereference vulnerability. Due to insufficient input validation, an authenticated, local attacker may craft a specific XML file to the affected products to cause null pointer dereference. Successful exploit will cause some service abnormal.
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Analysis
by VulDB Data Team • 02/08/2023
This vulnerability represents a critical null pointer dereference issue affecting multiple Huawei network equipment models including AR series routers, SRG series gateways, and various endpoint devices. The flaw exists in the XML processing functionality where insufficient input validation allows authenticated local attackers to craft malicious XML files that trigger memory access violations. According to CWE-476, this vulnerability maps directly to null pointer dereference conditions that can lead to application crashes and service disruptions. The vulnerability affects a wide range of Huawei networking hardware across multiple product lines and firmware versions, indicating a systemic issue in the XML parser implementation.
The technical exploitation of this vulnerability requires an authenticated local attacker who can submit crafted XML content to the affected devices. When the system processes this malformed input, it attempts to dereference a null pointer, causing the application to crash or behave unpredictably. This type of vulnerability falls under the ATT&CK technique T1203, where adversaries may use application crashes to disrupt services or potentially escalate privileges. The impact manifests as abnormal service behavior rather than complete system compromise, though the service disruption can significantly affect network operations and availability.
From a security perspective, this vulnerability represents a significant concern for network infrastructure devices that handle configuration and management data through XML interfaces. The authenticated requirement reduces the attack surface compared to unauthenticated exploits, but local access is often achievable through legitimate administrative activities or compromised credentials. Network administrators should consider the potential for privilege escalation if the XML processing functionality has elevated privileges or if multiple services are affected. The vulnerability affects both management and operational interfaces, potentially impacting device availability and network connectivity.
Mitigation strategies should focus on immediate firmware updates from Huawei to address the root cause in the XML processing code. Network administrators should implement strict access controls to prevent unauthorized local access to management interfaces, particularly for systems handling critical network functions. Regular security assessments should include validation of XML processing capabilities and input validation mechanisms. Additionally, monitoring systems should be configured to detect unusual service behavior or application crashes that may indicate exploitation attempts. Organizations should also consider network segmentation to limit the potential impact of local exploitation and implement proper change management processes to ensure timely patch deployment across all affected devices in their infrastructure.