CVE-2021-44519:Authenticated Directory Traversal vulnerability in Citrix XenMobile Server leading to remote code execution.

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CVE-2021-44519 affects Citrix XenMobile Server through version 10.12 RP9. This vulnerability is classified as CWE-22 (Improper Limitation of a Pathname to a Restricted Directory), allowing authenticated users to perform directory traversal attacks. Successful exploitation can lead to remote code execution on the affected system, potentially giving attackers complete control over the XenMobile Server environment.

Overview

This vulnerability exists in Citrix XenMobile Server through version 10.12 RP9. It is a directory traversal vulnerability (CWE-22) that requires authentication to exploit. Once authenticated, an attacker can manipulate file paths to access files outside of the intended directory structure, potentially leading to remote code execution. The severity of this vulnerability is high as it can allow attackers to gain unauthorized access to sensitive data or execute arbitrary code on the affected system. Organizations using vulnerable versions of Citrix XenMobile Server are at risk of data breaches, system compromise, and potential lateral movement within their network.

Remediation

To address this vulnerability, organizations should:

  1. Update Citrix XenMobile Server to the latest version as recommended by Citrix.
  2. Refer to Citrix support article CTX370551 for specific patching instructions.
  3. Implement network segmentation to limit access to the XenMobile Server.
  4. Enable multi-factor authentication for administrative access.
  5. Monitor system logs for suspicious activities that might indicate exploitation attempts.
  6. Conduct a security review to ensure no compromise has occurred prior to patching.
  7. Follow the principle of least privilege for user accounts that have access to the XenMobile Server.

References

  1. Citrix Documentation: https://docs.citrix.com/en-us/xenmobile/server/document-history.html
  2. Citrix Support Article: https://support.citrix.com/article/CTX370551
  3. Technical Analysis: https://gist.github.com/tree-chtsec/30932b9c94b8c7e4209d22b8b52d597f
  4. CHT Security Advisory: https://www.chtsecurity.com/news/09be10ae-b50e-46c9-8ce7-2e995fd988fe
  5. MITRE CWE-22: https://cwe.mitre.org/data/definitions/22.html

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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