CVE-2022-25078 in A3600R
Summary
by MITRE • 02/24/2022
TOTOLink A3600R V4.1.2cu.5182_B20201102 was discovered to contain a command injection vulnerability in the "Main" function. This vulnerability allows attackers to execute arbitrary commands via the QUERY_STRING parameter.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 02/26/2022
The vulnerability identified as CVE-2022-25078 represents a critical command injection flaw within the TOTOLink A3600R router firmware version V4.1.2cu.5182_B20201102. This issue resides in the "Main" function of the device's web interface, making it accessible through the QUERY_STRING parameter of HTTP requests. The vulnerability stems from inadequate input validation and sanitization mechanisms within the router's processing logic, allowing malicious actors to inject and execute arbitrary commands on the affected device. The flaw enables remote code execution without requiring authentication, presenting a significant security risk for network administrators and end users who rely on this particular router model for their network infrastructure.
This command injection vulnerability directly maps to CWE-77 which defines improper neutralization of special elements used in a command shell. The attack vector operates through the web interface where the QUERY_STRING parameter is processed without proper sanitization, allowing attackers to append malicious commands that get executed by the underlying operating system. The vulnerability exists because the router's software fails to properly validate or escape user-supplied input before incorporating it into system commands. This allows an attacker to manipulate the command execution flow and potentially gain full control over the device, including access to network resources, modification of router settings, and potential lateral movement within the network. The issue is particularly concerning as it affects a widely deployed consumer-grade router model, making it a prime target for automated exploitation campaigns.
The operational impact of this vulnerability extends beyond simple remote code execution to encompass complete network compromise and potential data exfiltration. An attacker could leverage this vulnerability to establish persistent backdoors, modify DNS settings to redirect traffic, implement man-in-the-middle attacks, or use the compromised device as a pivot point for attacking other networked systems. The vulnerability's accessibility through the web interface means that exploitation can occur from any location with internet connectivity, without requiring physical access or network credentials. Organizations and individuals using affected TOTOLink A3600R devices face significant risk of unauthorized access, network disruption, and potential exposure of sensitive information. The vulnerability also presents challenges for network security monitoring as malicious activities could be disguised as legitimate administrative operations.
Security mitigations for this vulnerability should begin with immediate firmware updates from TOTOLink, as the vendor should provide patches addressing the command injection flaw. Network segmentation and firewall rules should be implemented to restrict access to the router's web interface from untrusted networks, particularly limiting access to internal administrative networks only. Network administrators should consider disabling unnecessary web services and implementing strong access controls including multi-factor authentication where possible. Regular network monitoring should include detection of unusual traffic patterns that might indicate exploitation attempts, and intrusion detection systems should be configured to flag suspicious QUERY_STRING parameters. The vulnerability highlights the importance of secure coding practices including input validation, parameterized queries, and principle of least privilege in embedded systems. Organizations should also conduct thorough vulnerability assessments of their network infrastructure to identify other potentially affected devices and implement comprehensive network security policies that address both known and emerging threats. Compliance with industry standards such as NIST SP 800-53 and ISO 27001 should include specific controls for protecting network devices from command injection attacks and maintaining secure configuration management practices.