CVE-2022-32765 in R1510
Summary
by MITRE • 10/25/2022
An OS command injection vulnerability exists in the sysupgrade command injection functionality of Robustel R1510 3.1.16 and 3.3.0. A specially-crafted network request can lead to arbitrary command execution. An attacker can send a sequence of requests to trigger this vulnerability.
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Analysis
by VulDB Data Team • 11/25/2022
The vulnerability CVE-2022-32765 represents a critical operating system command injection flaw discovered in Robustel R1510 routers running firmware versions 3.1.16 and 3.3.0. This vulnerability resides within the sysupgrade command injection functionality, which is typically used for firmware updates and system management operations. The flaw allows attackers to execute arbitrary commands on the affected devices by crafting malicious network requests that exploit improper input validation mechanisms. The vulnerability specifically targets the router's upgrade process, where user-supplied parameters are not adequately sanitized before being processed by the underlying operating system.
The technical implementation of this vulnerability stems from insufficient input validation and sanitization within the sysupgrade function. When legitimate upgrade requests are processed, the system fails to properly filter or escape special characters that could be interpreted as command delimiters or operators by the underlying shell. This allows attackers to inject malicious commands that get executed with the privileges of the system process handling the upgrade functionality. The vulnerability is particularly dangerous because it operates at the system level where commands are executed with elevated privileges, potentially enabling full system compromise.
From an operational impact perspective, this vulnerability creates significant security risks for organizations relying on Robustel R1510 devices for network infrastructure. An attacker who successfully exploits this vulnerability can gain complete control over the affected router, potentially leading to man-in-the-middle attacks, network traffic interception, or use of the device as a pivot point for further attacks within the network. The vulnerability can be exploited remotely through network requests, making it particularly dangerous for devices accessible from the internet. According to the CWE classification system, this vulnerability maps to CWE-78, which describes improper neutralization of special elements used in OS commands, and aligns with ATT&CK technique T1059.001 for command and scripting interpreter.
Mitigation strategies for CVE-2022-32765 should prioritize immediate firmware updates from Robustel to address the root cause of the vulnerability. Organizations should also implement network segmentation to limit access to affected devices, restrict administrative access through firewall rules, and monitor network traffic for suspicious patterns indicating exploitation attempts. Additional protective measures include disabling unnecessary remote management features, implementing strong authentication mechanisms, and conducting regular security assessments of network infrastructure. The vulnerability demonstrates the importance of proper input validation and output encoding in preventing command injection attacks, aligning with industry best practices outlined in the OWASP Top Ten and NIST cybersecurity guidelines for secure coding practices.