CVE-2020-19150:Path Traversal vulnerability in Jfinal CMS v4.7.1 and earlier allows attackers to delete arbitrary files via the FileManager.delete() function.

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Description Preview

Jfinal CMS v4.7.1 and earlier contains an Improper Access Control vulnerability in the FileManager.delete() function located in modules/filemanager/FileManagerController.java. This vulnerability allows remote attackers to delete arbitrary files on the server through path traversal, potentially leading to sensitive information disclosure or denial of service conditions. The issue occurs because the application fails to properly validate and sanitize file paths before deletion operations, allowing attackers to navigate outside the intended directory structure.

Overview

This vulnerability (CVE-2020-19150) is classified as CWE-22 (Path Traversal) in Jfinal CMS versions 4.7.1 and earlier. The vulnerability exists in the FileManager.delete() function within the modules/filemanager/FileManagerController.java component. When exploited, attackers can manipulate file paths to delete files outside the intended directory structure, potentially deleting critical system files or configuration files containing sensitive information. This can lead to denial of service conditions or information disclosure, depending on which files are targeted. The vulnerability stems from insufficient input validation and path sanitization before file deletion operations are performed.

Remediation

To remediate this vulnerability, administrators should:

  1. Update Jfinal CMS to the latest version if a patched version is available
  2. Implement proper input validation for file paths in the FileManager component
  3. Use canonical path resolution before performing file operations
  4. Implement a whitelist approach for allowed file paths and operations
  5. Set up proper access controls to restrict file management operations to authorized users only
  6. Consider implementing a chroot jail or similar containment for file operations
  7. Monitor file system activities for suspicious deletion patterns

References

  1. https://www.seebug.org/vuldb/ssvid-97885 - Contains exploit details and third-party advisory information about this vulnerability
  2. CWE-22: Path Traversal - https://cwe.mitre.org/data/definitions/22.html
  3. MITRE CVE-2020-19150 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-19150

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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