CVE-2020-10181 identifies a critical vulnerability in the Sumavision Enhanced Multimedia Router (EMR) 3.0.4.27. This vulnerability allows the creation of arbitrary users with elevated privileges (administrator) on the device. The CVSS score of 9.8 signifies a critical severity, highlighting the urgent need for organizations to address this issue.
Organizations are at risk as this vulnerability could lead to unauthorized administrative access, enabling attackers to exploit the device fully. Without immediate remediation, the potential for serious security breaches escalates significantly, making it crucial for organizations relying on this router to implement patches.
As this vulnerability is publicly known and documented, organizations should prioritize patching immediately to safeguard their networks from potential exploitation. The vulnerability has been confirmed in the National Vulnerability Database and listed in CISA's Known Exploited Vulnerabilities catalog.
Given the critical nature of this vulnerability, organizations must take proactive steps to assess their environments and apply necessary updates as per vendor instructions to mitigate risks associated with CVE-2020-10181.
Vulnerability Details
The vulnerability is caused by improper handling of requests in the goform/formEMR30 endpoint of the Sumavision Enhanced Multimedia Router. The official CVE description notes that this vulnerability allows the creation of arbitrary administrator users through a malicious request, specifically demonstrated with a setString command.
This vulnerability falls under CVSS version 3.1 with a base score of 9.8. The attack vector is classified as network-based, requiring no privileges or user interaction for exploitation. The impacts on confidentiality, integrity, and availability are all rated as high, indicating severe consequences if exploited.
The vulnerability is classified under CWE-352, which refers to Cross-Site Request Forgery (CSRF) issues, emphasizing the need for proper authentication and validation in web-based interfaces.
Technical Analysis
The root cause of this vulnerability lies in the failure to properly validate user input during the user creation process. Attackers may leverage this by sending crafted requests that the router fails to authenticate correctly, enabling them to create unauthorized administrator accounts.
The attack vector is network-based, allowing remote exploitation without requiring physical access to the device. The complexity of the attack is low, meaning that even an unskilled attacker could potentially exploit this vulnerability with minimal effort.
With no privileges required for exploitation, this vulnerability poses a significant threat to organizations using the affected product. User interaction is not necessary, which further increases the risk as attackers can automate the exploitation process.
The high impacts on confidentiality, integrity, and availability indicate that successful exploitation could lead to unauthorized access, modification of sensitive data, and disruption of services.
Risk & Impact Analysis
Risk to organizations includes significant exposure to unauthorized access and potential data breaches. The ability for an attacker to create an administrator user means they can manipulate device settings and access sensitive information.
The blast radius for this vulnerability is substantial, as it could affect all devices running the vulnerable firmware version. Organizations must consider the implications of this vulnerability not only on the integrity of the device itself but also on the overall security posture of the network.
Considering the CVSS score of 9.8 and the inclusion of this vulnerability in the Known Exploited Vulnerabilities catalog, organizations should assess the urgency of remediation and prioritize it within their patch management strategies.
Signal | Status |
|---|---|
Known Exploit | No |
Public PoC | No |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected version of the Sumavision Enhanced Multimedia Router firmware is 3.0.4.27. Organizations should consider all versions prior to the vendor patch as vulnerable.
Mitigation & Remediation
Organizations must apply updates as per vendor instructions to mitigate this vulnerability. The recommended action is to upgrade to the latest firmware version provided by Sumavision.
If a patch is not available immediately, consider implementing network controls to restrict access to the vulnerable device. This could include firewall rules or network segmentation to limit exposure.
Monitoring for unusual behavior or unauthorized access attempts on the router should also be prioritized to detect potential exploitation attempts.
Security testing through continuous penetration testing can validate the effectiveness of these mitigations.
Detection Guidance
Organizations should monitor logs for indicators of unauthorized user creation or changes to user permissions on the router. Behavioral anomalies, such as attempts to access restricted areas of the router's configuration, should be flagged for further investigation.
Network signatures that indicate exploitation attempts should be developed, along with monitoring for requests that match the known exploitation patterns.
AppSecure Threat Intelligence Insight
The long-term significance of CVE-2020-10181 lies in its representation of the ongoing risks associated with CSRF vulnerabilities in network devices. Security teams should note that this vulnerability exemplifies how improper validation can lead to severe risks, emphasizing the need for robust security measures in device firmware.
This incident serves as a critical reminder for organizations to regularly audit their network devices and ensure they are running patched versions of firmware. Engaging in a vulnerability management program can help identify and remediate such vulnerabilities proactively.
In summary, CVE-2020-10181 highlights the necessity for continuous security assessments and the importance of staying informed about known vulnerabilities to protect organizational assets.
Security testing best practices should be a fundamental aspect of an organization's security strategy.
Known Exploitation Timeline
This vulnerability was added to the CISA Known Exploited Vulnerabilities catalog on November 3, 2021, marking its significance in the cybersecurity landscape.
EPSS Risk Context
The EPSS score for CVE-2020-10181 is 0.2055, placing it in the 95th percentile. This indicates a relatively high probability of future exploitation, highlighting the urgency for organizations to prioritize remediation.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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