CVE-2021-29727:Denial of Service vulnerability in IBM AIX kernel affecting AIX 7.1, 7.2, and VIOS 3.1.

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IBM AIX 7.1, 7.2, and VIOS 3.1 contain a vulnerability in the AIX kernel that could allow a local user to cause a denial of service condition. This vulnerability could potentially lead to system crashes or service disruptions. The vulnerability has been assigned IBM X-Force ID: 201106.

Overview

This vulnerability affects IBM AIX operating systems versions 7.1 and 7.2, as well as Virtual I/O Server (VIOS) version 3.1. The issue resides in the AIX kernel and can be exploited by local users to cause a denial of service condition. The exact technical details of the vulnerability have not been publicly disclosed, but it appears to be a local privilege escalation issue that could lead to system instability or crashes. Local access is required to exploit this vulnerability, which somewhat limits its potential impact.

Remediation

To address this vulnerability, system administrators should apply the appropriate patches provided by IBM. IBM has released security fixes for the affected systems:

  1. Download and install the latest security patches for:

    • AIX 7.1
    • AIX 7.2
    • VIOS 3.1

  2. Follow IBM's installation instructions available in the security bulletin referenced below.

  3. After applying patches, restart the affected systems to ensure the fixes take effect.

  4. As a general security practice, limit local user access to only trusted individuals.

References

  1. IBM Security Bulletin: https://www.ibm.com/support/pages/node/6483875
  2. IBM X-Force Exchange: https://exchange.xforce.ibmcloud.com/vulnerabilities/201106
  3. CVE-2021-29727: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-29727

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

Focus on What Matters

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

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