CVE-2011-5098: Chef Server in Chef before 0.9.20 and 0.10.x before 0.10.6 allows remote authenticated users to bypass access restrictions by creating admin clients without requiring administrative privileges.

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The vulnerability in Chef Server in Chef before versions 0.9.20 and 0.10.x before 0.10.6 allows authenticated users to create admin clients without needing administrative privileges. This issue arises from a lack of proper access control, enabling users with read permission for the validation key to execute a knife client create command with the --admin option, thereby bypassing intended access restrictions.

Overview

This vulnerability in Chef Server allows remote authenticated users to elevate their privileges and bypass access restrictions by creating admin clients without the necessary administrative privileges. By leveraging read permission for the validation key, an attacker can execute a specific command to gain unauthorized access.

Remediation

To remediate this vulnerability, users are advised to upgrade to a fixed version of Chef Server. Users should update to version 0.9.20 or 0.10.6 or later to address this issue. Additionally, it is recommended to review and adjust access control settings to ensure that only authorized users have the necessary permissions to create admin clients.

References

  1. GitHub Commit: https://github.com/opscode/chef/commit/33f0e9c58bbf047e1b401a834f3abfe72d9a8947
  2. Opscode Ticket: http://tickets.opscode.com/browse/CHEF-2649

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

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Armis Vulnerability Intelligence Database