CVE-2025-44892 in FW-WGS-804HPT
Summary
by MITRE • 05/21/2025
FW-WGS-804HPT v1.305b241111 was discovered to contain a stack overflow via the ownekey parameter in the web_rmon_alarm_post_rmon_alarm function.
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Analysis
by VulDB Data Team • 05/21/2025
The vulnerability identified as CVE-2025-44892 affects the FW-WGS-804HPT device firmware version v1.305b241111 and represents a critical stack overflow condition within the web_rmon_alarm_post_rmon_alarm function. This flaw manifests through the ownekey parameter, which serves as an entry point for malicious input manipulation. The stack overflow vulnerability occurs when the device processes user-supplied data without proper bounds checking or input validation, creating an exploitable condition that can be leveraged by remote attackers to disrupt normal device operations or potentially execute arbitrary code.
The technical implementation of this vulnerability stems from improper handling of the ownekey parameter within the web_rmon_alarm_post_rmon_alarm function. When an attacker submits a crafted payload through this parameter, the firmware fails to validate the input length or content, allowing the data to overflow the allocated stack buffer. This condition typically results in a crash of the affected service or application, potentially leading to a denial of service scenario. The vulnerability demonstrates characteristics consistent with CWE-121 Stack-based Buffer Overflow, which is classified under the broader category of buffer overflow flaws that occur when more data is written to a buffer than it can hold, causing adjacent memory locations to be overwritten.
The operational impact of this vulnerability extends beyond simple service disruption to potentially enable more severe attack vectors. Remote attackers capable of sending crafted HTTP requests to the affected device could trigger the stack overflow condition, leading to system instability or complete device compromise. The implications are particularly concerning for network infrastructure devices that rely on continuous operation, as a successful exploitation could result in extended downtime for critical network monitoring functions. This vulnerability aligns with ATT&CK technique T1203 Exploitation for Client Execution, where adversaries leverage software vulnerabilities to execute malicious code or cause system failures. The device's web-based management interface provides an accessible attack surface that could be exploited without requiring physical access or specialized equipment.
Mitigation strategies for CVE-2025-44892 should prioritize immediate firmware updates from the vendor to address the underlying buffer overflow condition. Network administrators should implement network segmentation to limit access to the affected device and restrict the attack surface through proper access controls and authentication mechanisms. Additionally, monitoring network traffic for suspicious patterns related to the ownekey parameter can help detect potential exploitation attempts. The vulnerability highlights the importance of input validation and bounds checking in embedded systems, particularly those handling web-based administrative interfaces. Organizations should conduct thorough vulnerability assessments of their network infrastructure to identify similar conditions in other firmware components and implement regular patch management procedures to maintain device security posture against evolving threats.