CVE-2020-5616:Authentication Bypass Vulnerability in Multiple PHP-Factory Products

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Multiple PHP-Factory web applications contain an authentication bypass vulnerability (CWE-287) that allows remote attackers to gain administrative access without proper authentication. The affected products include Calendar01, Calendar02, PKOBO-News01, PKOBO-vote01, Telop01, Gallery01, CalendarForm01, and Link01 in their free editions.

Overview

This vulnerability (CVE-2020-5616) affects multiple free edition PHP applications developed by PHP-Factory. Remote attackers can exploit this vulnerability to bypass authentication mechanisms and gain unauthorized administrative access to the affected applications. The vulnerability exists in the following products and versions:

  • Calendar01 free edition ver1.0.0
  • Calendar02 free edition ver1.0.0
  • PKOBO-News01 free edition ver1.0.3 and earlier
  • PKOBO-vote01 free edition ver1.0.1 and earlier
  • Telop01 free edition ver1.0.0
  • Gallery01 free edition ver1.0.3 and earlier
  • CalendarForm01 free edition ver1.0.3 and earlier
  • Link01 free edition ver1.0.0

The vulnerability allows attackers to bypass authentication controls through unspecified vectors, potentially leading to full administrative control of the affected applications.

Remediation

To address this vulnerability, administrators should:

  1. Update all affected PHP-Factory applications to their latest versions if available
  2. Implement additional authentication layers such as .htaccess protection for administrative areas
  3. Consider upgrading to paid editions if they contain security fixes for this vulnerability
  4. Monitor access logs for suspicious login attempts
  5. Implement network-level access controls to restrict administrative access to trusted IP addresses
  6. Contact PHP-Factory support for specific patching instructions if updates are not available

References

  1. Japan Vulnerability Notes: https://jvn.jp/en/jp/JVN73169744/index.html
  2. Product Pages:
    • Calendar01: https://www.php-factory.net/calendar/01.php
    • Calendar02: https://www.php-factory.net/calendar/02.php
    • CalendarForm01: https://www.php-factory.net/calendar_form/01.php
    • Gallery01: https://www.php-factory.net/gallery/01.php
    • Link01: https://www.php-factory.net/link/01.php
    • PKOBO-News01: https://www.php-factory.net/news/pkobo-news01.php
    • Telop01: https://www.php-factory.net/telop/01.php
    • PKOBO-vote01: https://www.php-factory.net/vote/01.php

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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