CVE-2020-7864:Raonwiz DEXT5Editor before version 3.5.1405747.1100.03 contains an unrestricted file upload vulnerability (CWE-434) that allows attackers to bypass authentication and execute arbitrary code.

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Description Preview

A vulnerability in Raonwiz DEXT5Editor versions prior to 3.5.1405747.1100.03 allows attackers to manipulate parameters to bypass authentication mechanisms, leading to unauthorized file upload and remote code execution. This critical security flaw enables malicious users to upload arbitrary files and execute them on the affected system, potentially resulting in complete system compromise.

Overview

The vulnerability (CVE-2020-7864) in Raonwiz DEXT5Editor is classified as an Unrestricted File Upload vulnerability (CWE-434). The issue stems from insufficient validation of user input and inadequate authentication controls when handling file uploads. By manipulating certain parameters, an attacker can bypass authentication checks and upload malicious files to the server. These uploaded files can then be executed, giving the attacker the ability to run arbitrary code with the privileges of the web application. This vulnerability poses a significant risk as it could lead to unauthorized access, data theft, system compromise, and potentially full control of the affected server.

Remediation

To address this vulnerability, organizations should implement the following measures:

  1. Update Raonwiz DEXT5Editor to version 3.5.1405747.1100.03 or later, which contains fixes for this vulnerability.
  2. If immediate updating is not possible, consider implementing additional security controls:
    • Configure web application firewalls to filter potentially malicious requests
    • Implement strict file type validation and restrictions
    • Enforce proper authentication and authorization mechanisms for all file upload operations
    • Restrict execution permissions on directories where files can be uploaded
  3. Monitor systems for suspicious activities, particularly unexpected file uploads or execution attempts
  4. Conduct a security audit to identify any potential compromises that may have occurred prior to patching

References

  1. Korea Internet & Security Agency (KISA) Advisory: https://www.krcert.or.kr/krcert/secNoticeView.do?bulletin_writing_sequence=36085
  2. Common Weakness Enumeration: CWE-434 - Unrestricted Upload of File with Dangerous Type
  3. MITRE CVE Entry: CVE-2020-7864

Industry ExposureMost to least
This section illustrates the prevalence of a specific Common Vulnerabilities and Exposures (CVE) across various industries based on customer reports. The ranking displays industries from the most to least affected by this particular vulnerability, offering valuable insight into where this CVE has been most frequently observed. This information can help organizations within these sectors prioritize their security efforts, understand their relative risk exposure compared to their peers, and focus remediation strategies where they are most needed. By understanding the industry-specific impact, organizations can make more informed decisions regarding patching, resource allocation, and overall risk management related to this CVE.

  1. Accommodation & Food Services
    Accommodation & Food Services
  2. Administrative, Support, Waste Management & Remediation Services
    Administrative, Support, Waste Management & Remediation Services
  3. Agriculture, Forestry Fishing & Hunting
    Agriculture, Forestry Fishing & Hunting
  4. Arts, Entertainment & Recreation
    Arts, Entertainment & Recreation
  5. Construction
    Construction
  6. Educational Services
    Educational Services
  7. Finance and Insurance
    Finance and Insurance
  8. Health Care & Social Assistance
    Health Care & Social Assistance
  9. Information
    Information
  10. Management of Companies & Enterprises
    Management of Companies & Enterprises
  11. Manufacturing
    Manufacturing
  12. Mining
    Mining
  13. Other Services (except Public Administration)
    Other Services (except Public Administration)
  14. Professional, Scientific, & Technical Services
    Professional, Scientific, & Technical Services
  15. Public Administration
    Public Administration
  16. Real Estate Rental & Leasing
    Real Estate Rental & Leasing
  17. Retail Trade
    Retail Trade
  18. Transportation & Warehousing
    Transportation & Warehousing
  19. Utilities
    Utilities
  20. Wholesale Trade
    Wholesale Trade

Focus on What Matters

  1. See Everything.
  2. Identify True Risk.
  3. Proactively Mitigate Threats.

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Armis Vulnerability Intelligence Database