CVE-2022-33328 in R1510
Summary
by MITRE • 06/30/2022
Multiple command injection vulnerabilities exist in the web_server ajax endpoints functionalities of Robustel R1510 3.3.0. A specially-crafted network packets can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger these vulnerabilities.The `/ajax/remove/` API is affected by a command injection vulnerability.
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Analysis
by VulDB Data Team • 07/17/2022
The vulnerability identified as CVE-2022-33328 represents a critical command injection flaw within the web server ajax endpoints of Robustel R1510 device firmware version 3.3.0. This vulnerability resides in the `/ajax/remove/` API functionality, which processes user-supplied input without adequate sanitization or validation mechanisms. The affected device operates as a cellular router and industrial communication gateway, making it a prime target for attackers seeking persistent network access or system compromise. Command injection vulnerabilities of this nature allow adversaries to execute arbitrary code on the underlying operating system, potentially leading to complete system takeover and unauthorized access to network resources.
The technical exploitation of this vulnerability occurs through carefully crafted network packets sent to the affected ajax endpoint. When the device processes these requests, it fails to properly validate or sanitize input parameters, allowing malicious payloads to be interpreted and executed as shell commands. This flaw directly maps to CWE-77 which defines command injection as the condition where a program passes untrusted data to an operating system command without proper sanitization. The vulnerability is particularly dangerous because it can be triggered through legitimate API endpoints that are designed for administrative functions, making the attack surface more accessible to potential threat actors. The robustel R1510 device typically operates in industrial environments where network security is paramount, and such vulnerabilities can provide attackers with persistent access to critical infrastructure.
The operational impact of this vulnerability extends beyond simple code execution to encompass complete system compromise and potential network infiltration. An attacker who successfully exploits this command injection flaw could gain root access to the device, enabling them to modify network configurations, install backdoors, monitor network traffic, or use the device as a pivot point to attack other systems within the network. The implications are particularly severe in industrial control systems where the R1510 device may be used for critical communications. This vulnerability aligns with ATT&CK technique T1059.001 for command and scripting interpreter, specifically shell scripting, which is commonly used by attackers to establish persistence and maintain access to compromised systems. The attack vector is particularly concerning as it requires minimal privileges to exploit, potentially allowing even unauthenticated attackers to achieve system compromise.
Mitigation strategies for this vulnerability should include immediate firmware updates from Robustel to address the command injection flaw in the web server ajax endpoints. Organizations should implement network segmentation to isolate affected devices from critical network segments, reducing the potential blast radius of successful exploitation attempts. Network monitoring should be enhanced to detect unusual traffic patterns or command execution attempts that may indicate exploitation activity. The principle of least privilege should be enforced by restricting access to the affected API endpoints to only authorized administrative users and implementing proper input validation mechanisms. Security teams should also consider implementing web application firewalls to filter malicious requests before they reach the vulnerable endpoints. Additionally, regular security assessments of industrial network devices should be conducted to identify and remediate similar vulnerabilities before they can be exploited by threat actors.