CVE-2025-44891

Comprehensive Technical Analysis of CVE-2025-44891

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-44891 Description: The vulnerability involves a stack overflow in the web_snmp_v3host_add_post function of FW-WGS-804HPT v1.305b241111, triggered by the host_ip parameter. CVSS Score: 9.8

Severity Evaluation:

• CVSS Base Score: 9.8 (Critical)
• Impact Metrics:
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
• Exploitability Metrics:
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged

The high CVSS score indicates a critical vulnerability that can be easily exploited with severe consequences.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Network-Based Attack: An attacker can exploit this vulnerability remotely over the network by sending a specially crafted HTTP POST request to the web_snmp_v3host_add_post function with a malicious host_ip parameter.

Exploitation Methods:

• Stack Overflow: The attacker can cause a stack overflow by sending an overly long or malformed host_ip parameter, leading to arbitrary code execution or a denial of service (DoS).
• Buffer Overflow: The attacker can inject malicious code into the stack, potentially leading to remote code execution (RCE).

3. Affected Systems and Software Versions

Affected Systems:

• FW-WGS-804HPT v1.305b241111: This specific firmware version is known to be vulnerable.

Software Versions:

• FW-WGS-804HPT v1.305b241111: The vulnerability has been identified in this version. Other versions may also be affected but have not been explicitly mentioned.

4. Recommended Mitigation Strategies

Immediate Actions:

• Patch Management: Apply the latest firmware update provided by the vendor as soon as it becomes available.
• Network Segmentation: Isolate the affected devices from critical networks to limit the potential impact of an exploit.
• Firewall Rules: Implement strict firewall rules to restrict access to the vulnerable function.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity related to the web_snmp_v3host_add_post function.

Long-Term Strategies:

• Regular Audits: Conduct regular security audits and vulnerability assessments.
• Security Training: Educate staff on the importance of timely patching and secure coding practices.
• Vendor Communication: Maintain open communication with the vendor for updates and patches.

5. Impact on Cybersecurity Landscape

Immediate Impact:

• Critical Infrastructure: Devices running the affected firmware are at high risk, especially in critical infrastructure environments.
• Data Breaches: Potential for data breaches and unauthorized access to sensitive information.

Long-Term Impact:

• Reputation: Organizations using the affected devices may face reputational damage if a breach occurs.
• Compliance: Potential non-compliance with regulatory requirements if the vulnerability is not addressed promptly.

6. Technical Details for Security Professionals

Vulnerability Details:

• Function: web_snmp_v3host_add_post
• Parameter: host_ip
• Issue: Stack overflow due to improper bounds checking on the host_ip parameter.

Exploitation Steps:

1. Identify Target: Locate devices running FW-WGS-804HPT v1.305b241111.
2. Craft Payload: Create a malicious HTTP POST request with an overly long or malformed host_ip parameter.
3. Send Request: Send the crafted request to the target device.
4. Exploit: Achieve arbitrary code execution or cause a DoS condition.

Detection and Response:

• Log Analysis: Monitor logs for unusual activity related to the web_snmp_v3host_add_post function.
• Anomaly Detection: Use anomaly detection tools to identify deviations from normal behavior.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

Conclusion: CVE-2025-44891 represents a critical vulnerability that requires immediate attention. Organizations should prioritize patching affected devices and implement robust security measures to mitigate the risk of exploitation. Continuous monitoring and proactive security practices are essential to safeguard against such threats.