CVE-2022-45506 in W30E
Summary
by MITRE • 12/08/2022
Tenda W30E v1.0.1.25(633) was discovered to contain a command injection vulnerability via the fileNameMit parameter at /goform/delFileName.
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Analysis
by VulDB Data Team • 01/01/2023
The vulnerability identified as CVE-2022-45506 affects the Tenda W30E wireless router firmware version 1.0.1.25(633) and represents a critical command injection flaw within the device's web interface. This vulnerability exists in the /goform/delFileName endpoint where the fileNameMit parameter is improperly validated and processed, allowing unauthorized attackers to execute arbitrary commands on the affected device. The issue stems from insufficient input sanitization and validation mechanisms that fail to properly filter user-supplied data before incorporating it into system commands. The affected parameter is directly used in command construction without adequate escaping or encoding, creating a pathway for malicious command execution. This type of vulnerability falls under the Common Weakness Enumeration category CWE-77, which specifically addresses command injection flaws where untrusted data is incorporated into shell commands without proper validation or sanitization.
The operational impact of this vulnerability is severe and multifaceted, as it enables remote code execution on the targeted device with the privileges of the web server process. An attacker who successfully exploits this vulnerability can gain full control over the router's functionality, potentially leading to complete network compromise. The attack surface extends beyond simple command execution to include potential data exfiltration, network traffic interception, and the ability to establish persistent backdoors within the local network. This vulnerability particularly affects users who have not updated their firmware to the latest versions, as it represents a known issue that was likely addressed in subsequent releases. The exploitability of this vulnerability is relatively high due to the accessible web interface and the absence of authentication requirements for the vulnerable endpoint, making it a prime target for automated exploitation campaigns.
Mitigation strategies for CVE-2022-45506 should begin with immediate firmware updates from Tenda to address the command injection vulnerability. Network administrators should implement network segmentation to limit exposure of affected devices and deploy intrusion detection systems to monitor for suspicious command execution patterns. The implementation of web application firewalls can help filter malicious payloads targeting the vulnerable endpoint, while disabling unnecessary web management interfaces reduces the attack surface. Security monitoring should include regular vulnerability scanning of network devices to identify unpatched systems, and network access controls should be configured to restrict access to administrative interfaces to trusted IP ranges only. Additionally, organizations should conduct regular security assessments of network infrastructure to identify similar command injection vulnerabilities in other network devices and implement proper input validation controls across all web applications. The vulnerability demonstrates the importance of proper secure coding practices and input validation, as outlined in the ATT&CK framework under the command and control tactics, where adversaries establish persistent access through compromised network devices.