CVE-2025-6090 in GR-5400AX
Summary
by MITRE • 06/15/2025
A vulnerability was found in H3C GR-5400AX V100R009L50 and classified as critical. This issue affects the function UpdateWanparamsMulti/UpdateIpv6params of the file /routing/goform/aspForm. The manipulation of the argument param leads to buffer overflow. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. The vendor confirms the existence of this issue. Because they assess the risk as low, they do not have immediate plans for remediation.
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Analysis
by VulDB Data Team • 06/15/2025
The vulnerability identified as CVE-2025-6090 represents a critical buffer overflow flaw within the H3C GR-5400AX V100R009L50 network device firmware. This security weakness resides in the UpdateWanparamsMulti and UpdateIpv6params functions located within the /routing/goform/aspForm file, which serves as a critical interface for network configuration management. The buffer overflow occurs when processing the param argument, creating an exploitable condition that allows attackers to manipulate memory layout and potentially execute arbitrary code on the affected device. The vulnerability's classification as critical stems from its remote exploitability and the fact that public exploitation methods have already been disclosed, making it immediately dangerous to unpatched systems.
The technical implementation of this buffer overflow vulnerability demonstrates a classic programming error where input validation is insufficient for handling user-supplied parameters. When the param argument exceeds the allocated buffer space, it overflows into adjacent memory locations, potentially corrupting program execution flow and allowing attackers to inject malicious code. This type of vulnerability maps directly to CWE-121, which describes stack-based buffer overflow conditions, and CWE-122, which covers heap-based buffer overflow scenarios. The attack vector requires remote network access to the affected device, making it particularly dangerous in environments where network services are exposed to untrusted networks. The exploitation process likely involves crafting specially formatted input parameters that trigger the buffer overflow condition, potentially leading to complete system compromise and unauthorized access to network infrastructure.
The operational impact of this vulnerability extends beyond simple exploitation as it fundamentally compromises the integrity and availability of the network infrastructure it protects. An attacker who successfully exploits this vulnerability could gain root-level access to the device, enabling them to modify network routing configurations, intercept traffic, establish persistent backdoors, or use the device as a pivot point for further attacks within the network. The device's role as a routing gateway makes it a particularly attractive target for attackers seeking to disrupt network operations or gain unauthorized access to sensitive internal systems. Organizations with exposed H3C GR-5400AX devices face significant risk of network infiltration, data exfiltration, and potential denial of service conditions that could affect business continuity and regulatory compliance.
Despite the vendor's assessment of low risk and lack of immediate remediation plans, security professionals must treat this vulnerability with the utmost seriousness given its public exploitation status and critical classification. Organizations should implement immediate network segmentation measures to isolate affected devices from untrusted networks and deploy network monitoring solutions to detect potential exploitation attempts. The mitigation strategy should include disabling unnecessary network services, implementing strict access controls, and establishing robust network intrusion detection systems to monitor for suspicious traffic patterns. Additionally, organizations should consider the ATT&CK framework's T1059.007 technique for command and control communications and T1046 for network service scanning, as these attack patterns are commonly associated with exploitation of similar buffer overflow vulnerabilities. The lack of vendor remediation creates an urgent need for alternative protective measures including network-wide scanning for affected devices, implementation of compensating controls, and development of incident response procedures specifically tailored to address this type of remote code execution vulnerability in network infrastructure devices.