CVE-2016-5822 in OceanStor 5800
Summary
by MITRE
Huawei Oceanstor 5800 before V300R002C10SPC100 allows remote attackers to cause a denial of service (CPU consumption) via a large number of crafted HTTP packets.
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Analysis
by VulDB Data Team • 05/15/2026
The vulnerability identified as CVE-2016-5822 affects Huawei Oceanstor 5800 storage systems running firmware versions prior to V300R002C10SPC100. This issue represents a significant security weakness that enables remote attackers to exploit a denial of service condition through strategic manipulation of HTTP traffic. The flaw specifically targets the system's HTTP processing mechanisms, creating a scenario where legitimate service availability is compromised through excessive CPU resource consumption.
The technical root cause of this vulnerability lies in insufficient input validation within the HTTP protocol handling component of the Oceanstor 5800 storage array. When the system receives a large volume of malformed or specially crafted HTTP packets, the processing logic fails to properly sanitize or limit the resource allocation required for handling these requests. This leads to a condition where the CPU utilization spikes dramatically as the system attempts to process each malicious packet, ultimately consuming all available processing capacity and rendering the storage array incapable of serving legitimate requests.
From an operational perspective, this vulnerability presents a substantial risk to enterprise environments that rely on Huawei Oceanstor 5800 systems for critical data storage operations. The remote nature of the attack means that adversaries can exploit this weakness from outside the network perimeter without requiring physical access or valid credentials. The resulting CPU exhaustion can lead to complete system unavailability, data access disruption, and potential business continuity impacts. Organizations utilizing these storage systems face the risk of extended downtime while the system recovers from the resource exhaustion condition, potentially affecting multiple applications and services dependent on the storage infrastructure.
The vulnerability aligns with CWE-400, which categorizes the weakness as "Uncontrolled Resource Consumption" or "Resource Exhaustion," and demonstrates characteristics consistent with the ATT&CK technique T1499.004 for "Resource Hijacking." This classification indicates that the attack vector specifically targets system resources to achieve its disruptive objectives. The impact severity is amplified by the fact that the attack requires minimal privileges and can be executed remotely, making it particularly dangerous for organizations with exposed storage systems. Network administrators and security teams must consider this vulnerability as part of their broader threat landscape, especially in environments where storage systems are not adequately protected by network segmentation or security controls.
Mitigation strategies should include immediate firmware updates to the latest available version that addresses this specific vulnerability, as well as implementing network-level protections such as rate limiting and packet filtering to prevent excessive HTTP traffic from reaching the storage array. Additionally, organizations should consider deploying intrusion detection systems that can identify anomalous HTTP traffic patterns and implement monitoring solutions that can alert administrators to unusual CPU utilization spikes. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other storage systems within the network infrastructure, ensuring comprehensive protection against resource exhaustion attacks that could compromise the availability of critical storage services.