An OS command injection vulnerability exists in the device network settings functionality of Reolink RLC-410W, version v3.0.0.136_20121102. This vulnerability allows attackers to send an HTTP request that triggers the execution of arbitrary commands on the device. The root cause of this vulnerability lies in improper validation of the ddns->domain variable, which contains the domain parameter provided through the SetDdns API. The CVSS score for this vulnerability is 7.2, indicating a high severity level, which underscores the importance of immediate action for organizations using this device.
Risk to organizations includes potential unauthorized access to device functionalities and sensitive data exposure, as the vulnerability can be exploited remotely with low complexity. Given the nature of the vulnerability and its potential impact, this should be a top priority for organizations utilizing the affected Reolink RLC-410W IP cameras.
Organizations should prioritize patching immediately to address this vulnerability since it has been noted in the Known Exploited Vulnerabilities catalog. As of now, public exploits have not been confirmed, but the potential for exploitation exists, which necessitates a proactive approach to remediation.
Mitigation strategies may include implementing network segmentation, applying patches as soon as they are available, and continuously monitoring device logs for suspicious activity. It is critical for users of the Reolink RLC-410W to stay informed about updates and take necessary measures to protect their systems.
Vulnerability Details
The official description of CVE-2021-40407 states that an OS command injection vulnerability exists in the device network settings functionality of Reolink RLC-410W version v3.0.0.136_20121102. According to the CVSS v3.1 metrics, this vulnerability has an attack vector of NETWORK, with low attack complexity, requiring high privileges, and no user interaction. The impacts on confidentiality, integrity, and availability are all rated as HIGH, indicating significant risk if the vulnerability is exploited.
Technical Analysis
The root cause of this vulnerability is a failure to properly validate user input in the ddns->domain variable. Attackers may leverage this flaw by crafting specific HTTP requests to execute arbitrary commands on the underlying operating system, potentially leading to a complete compromise of the device. The attack vector is network-based, meaning that an attacker only needs access to the network where the device is located to exploit the vulnerability.
The attack complexity is low, as it does not require sophisticated techniques and can be executed by individuals with high privileges. Importantly, user interaction is not required, making it easier for attackers to exploit the vulnerability without needing physical access to the device. The impacts of a successful exploitation can be severe, as it can lead to unauthorized access to sensitive information stored on the device, manipulation of its functionalities, and potential disruption of services.
Risk & Impact Analysis
The real-world risk posed by CVE-2021-40407 is significant. Given the ongoing trend of device exploitation, organizations using the Reolink RLC-410W IP camera must recognize that this vulnerability could lead to compromised device integrity and unauthorized access to sensitive data. The blast radius of this vulnerability can extend beyond the individual device, potentially affecting connected systems and networks.
Organizations should assess their exposure and take immediate action to mitigate risk. The urgency for organizations is heightened by the fact that this vulnerability is included in the Known Exploited Vulnerabilities catalog, which indicates that it is being actively monitored for exploitation. Therefore, organizations must act urgently to protect themselves against potential threats.
Exploitation Status
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected version is the Reolink RLC-410W firmware version 3.0.0.136_20121102. Organizations using this version should take immediate action to mitigate this vulnerability. If version information is not available, it is advisable to assume that all versions prior to the vendor patch are susceptible.
Mitigation & Remediation
To mitigate this vulnerability, organizations should implement the following actions: apply the latest firmware updates as they are released, review and strengthen network configurations, and ensure that the device's access controls are properly configured. If a patch is not currently available, organizations may need to discontinue the use of the affected product until a suitable mitigation is in place.
Organizations should monitor network traffic to detect any unauthorized access attempts and consider conducting security assessments to identify any additional vulnerabilities in their systems. For further guidance, organizations can refer to best practices outlined in relevant security resources.
penetration testing can also be beneficial to validate the effectiveness of the implemented measures.
Detection Guidance
Organizations should monitor logs for any unusual activity related to the Reolink RLC-410W devices. Key indicators include unexpected HTTP requests to the SetDdns API and any abnormal behavior during device operations. Network signatures that deviate from normal traffic patterns can also serve as a warning sign of potential exploitation.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2021-40407 highlights the ongoing risks associated with OS command injection vulnerabilities in networked devices. As organizations increasingly rely on IoT devices, the potential for exploitation grows, necessitating robust security measures.
This vulnerability exemplifies the critical need for continuous security assessments and the importance of timely patch management. Security teams should learn from this incident to enhance their response strategies and prioritize securing devices connected to their networks.
For further information and resources on securing IoT devices, organizations can benefit from reviewing best practices and guidelines provided by security experts. Engaging in regular vulnerability management programs can also enhance overall security posture.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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