CVE-2019-20085 is a high-severity vulnerability affecting TVT NVMS-1000 devices. This vulnerability allows unauthorized users to perform directory traversal attacks via GET requests to the /.. path. The risk associated with this vulnerability is significant due to its potential to expose sensitive files and configurations on the affected devices. Organizations using these devices need to be aware of this issue, as it poses a high threat level.
The Common Vulnerability Scoring System (CVSS) score for this vulnerability is 7.5, categorizing it as high severity. This classification indicates a strong likelihood that an attacker could exploit this vulnerability with minimal effort, potentially leading to serious consequences such as unauthorized access to sensitive data.
Due to its inclusion in the Known Exploited Vulnerabilities (KEV) catalog, CVE-2019-20085 is actively exploited in the wild. Organizations should prioritize patching immediately to mitigate the risks associated with this vulnerability.
With the increasing sophistication of cyber threats, understanding the implications of vulnerabilities like CVE-2019-20085 is crucial for security practitioners. Organizations are strongly urged to implement remediation measures promptly to protect their systems.
Vulnerability Details
The vulnerability allows directory traversal, which is classified under CWE-22. This means an attacker can access files and directories that are outside the intended directory structure by manipulating the request URL. The CVSS vector string indicates that the attack can be executed over a network with low complexity and no authentication required.
TVT NVMS-1000 devices utilizing the affected firmware are the primary targets. This vulnerability was published on December 30, 2019, and has been analyzed for its potential impact on users.
Technical Analysis
The root cause of this vulnerability lies in the improper handling of user input in the GET requests. Specifically, the device fails to validate and sanitize directory traversal sequences, allowing attackers to manipulate file paths. The attack vector is network-based, meaning that an attacker can exploit this vulnerability remotely without physical access to the device.
The attack complexity is deemed low, as no special conditions or user interaction is required. The lack of privileges required for exploitation further escalates the risk, as even unauthenticated users can perform the attack. The confidentiality impact is high, potentially allowing unauthorized access to sensitive data, while integrity and availability impacts are reported as none.
Risk & Impact Analysis
The real-world risk posed by CVE-2019-20085 is substantial. Organizations deploying TVT NVMS-1000 devices may face significant data exposure risks due to this vulnerability. The attack surface is broad, given the network attack vector, allowing exploitation from anywhere without the need for local access.
Organizations should assess the potential impact on their data security, compliance obligations, and overall operational integrity. The urgency for addressing this vulnerability is critical, as it has been actively exploited in the wild, necessitating immediate action to patch affected systems.
Signal | Status |
|---|---|
Known Exploit | Yes |
Public PoC | Yes |
Actively Exploited | Yes |
Ransomware Use | No |
Affected Versions
The affected versions include all versions of the TVT NVMS-1000 firmware prior to the vendor's patch. Organizations should verify their firmware version and apply necessary updates to mitigate this vulnerability.
Mitigation & Remediation
To remediate this vulnerability, organizations must apply the vendor's patches immediately. Regularly updating firmware is a critical practice for mitigating vulnerabilities. If patches are not available, organizations should consider implementing workarounds such as network segmentation to limit exposure.
Additionally, configuration hardening and network controls should be employed to monitor and restrict access to affected devices. For ongoing security, organizations should engage in regular penetration testing to identify potential weaknesses.
Detection Guidance
Monitoring for unusual access patterns or failed attempts to access sensitive directories can help detect exploitation attempts. Organizations should audit logs for any unauthorized access events and review configurations to ensure they align with security best practices.
AppSecure Threat Intelligence Insight
CVE-2019-20085 serves as a reminder of the critical importance of secure coding practices. It highlights the need for organizations to continuously monitor their environments for emerging vulnerabilities. As cyber threats evolve, so too must the security strategies employed by organizations.
For further insights into vulnerability management, organizations can explore resources such as the vulnerability management program and best practices in penetration testing methodology to enhance their security posture.
Additionally, understanding the patterns of past vulnerabilities can help organizations prepare for future threats. Engaging with security communities and following industry trends are vital steps toward effective risk management.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
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