CVE-2022-34597 in AX1806
Summary
by MITRE • 07/06/2022
Tenda AX1806 v1.0.0.1 was discovered to contain a command injection vulnerability via the function WanParameterSetting.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 07/19/2022
The vulnerability identified as CVE-2022-34597 affects the Tenda AX1806 router firmware version 1.0.0.1, representing a critical command injection flaw that exposes network infrastructure to significant security risks. This vulnerability resides within the WanParameterSetting function, which handles configuration parameters for the router's wide area network settings. The issue stems from insufficient input validation and sanitization mechanisms within the web interface, allowing malicious actors to inject arbitrary commands that execute with elevated privileges on the affected device. The vulnerability is classified under CWE-77 as a command injection weakness, which directly enables attackers to execute system commands through improperly validated user inputs.
The technical exploitation of this vulnerability occurs when an attacker sends specially crafted HTTP requests to the router's web management interface, specifically targeting the WanParameterSetting function. The router fails to properly sanitize user-supplied parameters, particularly those related to WAN configuration settings such as IP addresses, DNS servers, or other network parameters. When these unvalidated inputs are processed and passed to system commands without proper escaping or filtering, attackers can inject malicious shell commands that execute with the privileges of the web server process, typically running as root or system administrator. This creates a complete compromise of the device's functionality and potentially the entire network segment it serves.
The operational impact of this vulnerability extends beyond simple device compromise, as it enables attackers to establish persistent access to the network infrastructure while potentially exfiltrating sensitive data or using the compromised device as a pivot point for further attacks. The vulnerability affects the router's core network functionality, allowing attackers to modify network configurations, redirect traffic, or even disable network services entirely. According to ATT&CK framework, this vulnerability maps to T1059.001 Command and Scripting Interpreter and T1566.001 Phishing, as attackers can leverage the compromised device for network reconnaissance and lateral movement. The compromised device can serve as a command and control node for botnet operations or be used to launch attacks against other networked systems, making it a critical target for network defenders.
Mitigation strategies for CVE-2022-34597 should include immediate firmware updates from Tenda, as the vendor has likely released patches addressing the input validation issues. Network administrators should implement network segmentation to limit the blast radius of potential exploitation, while also deploying intrusion detection systems to monitor for suspicious traffic patterns related to command injection attempts. The implementation of web application firewalls and input validation controls at the network perimeter can provide additional defense layers. Security monitoring should include regular vulnerability scanning of network devices to identify unpatched systems, while access controls should be strengthened through multi-factor authentication and restricted administrative access. Organizations should also consider implementing network access control policies that limit the exposure of administrative interfaces to trusted networks only, reducing the attack surface for such vulnerabilities.