CVE-2022-35263 in R1510
Summary
by MITRE • 10/25/2022
A denial of service vulnerability exists in the web_server hashFirst functionality of Robustel R1510 3.1.16 and 3.3.0. A specially-crafted network request can lead to denial of service. An attacker can send a sequence of requests to trigger this vulnerability.The `/action/import_file/` API is affected by command injection vulnerability.
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Analysis
by VulDB Data Team • 10/26/2022
The vulnerability identified as CVE-2022-35263 affects the Robustel R1510 device running firmware versions 3.1.16 and 3.3.0, specifically targeting the web server's hashFirst functionality. This denial of service condition represents a critical security weakness that can be exploited by remote attackers to disrupt legitimate service availability. The affected device operates within industrial networking environments where continuous operation is essential for maintaining communication infrastructure. The vulnerability stems from inadequate input validation within the web server component, particularly when processing requests that utilize the hashFirst functionality. This flaw allows malicious actors to craft specific network traffic patterns that can cause the device to become unresponsive or crash entirely, thereby denying service to authorized users who depend on the device for network connectivity.
The technical implementation of this vulnerability involves the `/action/import_file/` API endpoint which suffers from command injection flaws that directly contribute to the denial of service condition. When an attacker submits specially crafted requests to this API, the system fails to properly sanitize input parameters before processing them within the hashFirst functionality. This lack of proper input validation creates an environment where attacker-controlled data can be interpreted as executable commands, leading to system instability. The command injection vulnerability exists because the application directly incorporates user-supplied data into system commands without appropriate sanitization or encoding mechanisms. This weakness aligns with CWE-77 and CWE-89 categories, which specifically address command injection and SQL injection vulnerabilities respectively, though the primary impact here manifests as denial of service rather than data compromise.
The operational impact of this vulnerability extends beyond simple service disruption to potentially compromise entire communication networks that rely on Robustel R1510 devices. In industrial control systems and network infrastructure deployments, these devices often serve as critical communication bridges between different network segments. When subjected to denial of service attacks exploiting CVE-2022-35263, network administrators may experience complete loss of connectivity, requiring manual intervention to restore service. The vulnerability can be triggered through a sequence of requests that gradually overwhelm the device's processing capabilities or directly cause system crashes. This makes the attack relatively easy to execute and potentially devastating in environments where network uptime is critical for business operations or safety systems. The attack surface is particularly concerning given that the vulnerability affects devices in the 3.x firmware series, indicating a widespread impact across multiple versions of the product.
Mitigation strategies for CVE-2022-35263 should prioritize immediate firmware updates from Robustel to address the root cause of both the denial of service and command injection vulnerabilities. Network administrators should implement firewall rules and access controls to restrict access to the affected API endpoint, particularly limiting requests to trusted sources only. The implementation of input validation mechanisms at the network perimeter can provide additional protection layers by filtering out suspicious request patterns before they reach the vulnerable device. Security monitoring should be enhanced to detect anomalous sequences of requests to the `/action/import_file/` endpoint, which could indicate exploitation attempts. Organizations should also consider network segmentation strategies to isolate affected devices and limit the potential impact of successful exploitation. From an ATT&CK framework perspective, this vulnerability maps to techniques involving service disruption and command execution, with potential lateral movement implications if attackers can establish persistent access through the command injection component. Regular security assessments and vulnerability scanning should be implemented to identify similar weaknesses in other network infrastructure components that may present comparable risks.