CVE-2024-48895 in Rakuten Turbo 5G
Summary
by MITRE • 11/20/2024
Improper neutralization of special elements used in an OS command ('OS Command Injection') issue exists in Rakuten Turbo 5G firmware version V1.3.18 and earlier. If this vulnerability is exploited, a remote authenticated attacker may execute an arbitrary OS command.
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Analysis
by VulDB Data Team • 11/20/2024
The vulnerability identified as CVE-2024-48895 represents a critical operating system command injection flaw within the Rakuten Turbo 5G firmware versions up to and including V1.3.18. This security weakness resides in the improper handling of user-supplied input that is subsequently incorporated into operating system commands without adequate sanitization or validation. The flaw allows for the execution of arbitrary commands on the underlying operating system, creating a severe attack surface that can be exploited by malicious actors. The vulnerability is classified under CWE-77 as improper neutralization of special elements used in an OS command, which directly maps to the established category of command injection attacks. The specific implementation flaw occurs when the firmware fails to properly escape or filter input parameters that are later used in system command execution contexts.
The operational impact of this vulnerability extends beyond simple command execution capabilities, as it provides attackers with elevated privileges and system-level access to the affected device. An authenticated attacker who can influence command execution parameters within the firmware interface can potentially execute arbitrary code with the privileges of the executing service or user. This type of vulnerability aligns with ATT&CK technique T1059.001 for command and script interpreter execution, where adversaries leverage legitimate system utilities to execute malicious commands. The attack surface is particularly concerning for network infrastructure devices like 5G routers, as they often operate with elevated privileges and serve as critical points in network communications.
Remote exploitation of this vulnerability requires an authenticated user context, meaning attackers must first establish valid credentials to access the device's management interface or API endpoints. Once authenticated, the attacker can manipulate input fields that are subsequently used in OS command construction, leading to arbitrary code execution. The attack vector typically involves sending specially crafted payloads through web forms, API calls, or other user input mechanisms that are not properly validated before being passed to system commands. This vulnerability can be exploited to gain complete control over the device, potentially enabling network reconnaissance, data exfiltration, or further lateral movement within the network infrastructure.
Mitigation strategies for CVE-2024-48895 should prioritize immediate firmware updates to versions that address the command injection vulnerability, as provided by Rakuten. Organizations should implement network segmentation to limit access to these devices and enforce strict authentication controls. Input validation and sanitization should be strengthened at all user-facing interfaces to prevent untrusted data from being processed in command contexts. The principle of least privilege should be enforced by ensuring that system commands are executed with minimal required permissions. Security monitoring should include detection of unusual command execution patterns and anomalous network behavior that might indicate exploitation attempts. Additionally, network administrators should consider implementing web application firewalls and intrusion detection systems to detect and block malicious command injection attempts targeting these vulnerable devices.