CVE-2022-33326 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/config_rollback/` API is affected by a command injection vulnerability.
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Analysis
by VulDB Data Team • 07/17/2022
The CVE-2022-33326 vulnerability represents a critical command injection flaw within the Robustel R1510 device firmware version 3.3.0, specifically affecting the web server's ajax endpoint functionalities. This vulnerability resides in the `/ajax/config_rollback/` API which processes user-supplied input without proper sanitization or validation mechanisms. The affected device operates as a cellular router and industrial communication gateway, making it a potential target for attackers seeking persistent network access or system compromise. The vulnerability stems from improper input handling where user-controllable parameters are directly incorporated into system commands without adequate filtering or escaping, creating an avenue for malicious code execution.
The technical exploitation of this vulnerability occurs through crafted network packets sent to the affected device's web interface. When an attacker submits specially crafted requests to the `/ajax/config_rollback/` endpoint, the system fails to properly validate or sanitize the input parameters before incorporating them into shell commands. This allows attackers to inject malicious commands that execute with the privileges of the web server process, typically running with elevated system permissions. The vulnerability manifests as a classic command injection attack pattern where input data flows directly into command execution contexts, enabling arbitrary code execution on the target device. This type of vulnerability maps directly to CWE-77 and CWE-88 within the CWE database, which specifically address command injection flaws and improper neutralization of special elements used in command execution.
The operational impact of CVE-2022-33326 extends beyond simple remote code execution, as it provides attackers with complete control over the affected Robustel R1510 device. Once exploited, attackers can manipulate network configurations, access sensitive data, establish persistent backdoors, or use the device as a pivot point for attacking other systems within the network. The vulnerability affects industrial environments where these devices are commonly deployed, potentially compromising critical infrastructure operations. From an ATT&CK framework perspective, this vulnerability enables multiple techniques including T1059.001 (Command and Scripting Interpreter: PowerShell), T1068 (Exploitation for Privilege Escalation), and T1566 (Phishing), as attackers can leverage the compromised device for further network infiltration. The impact is particularly severe in environments where the device serves as a network gateway or firewall, as it could provide attackers with complete network access and the ability to monitor or manipulate communications.
Mitigation strategies for CVE-2022-33326 should focus on immediate firmware updates from Robustel, as the vendor has likely released patches addressing this specific vulnerability. Network segmentation and access controls should be implemented to limit exposure of these devices to untrusted networks, particularly restricting direct internet access to management interfaces. Input validation and sanitization mechanisms should be strengthened at the application level to prevent malicious data from reaching command execution contexts. Additionally, network monitoring should be enhanced to detect anomalous traffic patterns that might indicate exploitation attempts. Security teams should implement regular vulnerability assessments and penetration testing to identify similar flaws in industrial control systems. The vulnerability highlights the importance of secure coding practices and input validation in embedded systems, particularly in industrial IoT devices where the attack surface can have significant operational consequences. Organizations should also consider implementing intrusion detection systems specifically designed to identify command injection attempts and maintain comprehensive incident response plans for industrial control system security breaches.