CVE-2020-13831:Memory Mapping Vulnerability in Samsung Mobile Devices' Trustonic Kinibi Component

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A vulnerability (CVE-2020-13831) was discovered in the Trustonic Kinibi component of Samsung mobile devices running Android O(8.x) and P(9.0) with Exynos 7570 chipsets. This vulnerability allows arbitrary memory mapping, which could potentially enable attackers to access and manipulate protected memory areas, leading to privilege escalation or information disclosure.

Overview

The vulnerability affects the Trustonic Kinibi component, which is part of the Trusted Execution Environment (TEE) in Samsung mobile devices. The TEE is designed to provide a secure area for processing sensitive data, separate from the main operating system. The arbitrary memory mapping vulnerability compromises this security boundary by allowing unauthorized mapping of memory regions. This could potentially allow an attacker to access sensitive information stored in protected memory areas or execute code with elevated privileges. The vulnerability is classified as CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer).

Remediation

Samsung has addressed this vulnerability in their security updates. Users of affected devices (those with Exynos 7570 chipsets running Android 8.x or 9.0) should:

  1. Ensure their device is updated to the latest available firmware
  2. Enable automatic security updates in device settings
  3. Regularly check for and install system updates
  4. Monitor Samsung's security bulletin for any additional information or mitigations

The vulnerability was addressed in Samsung's June 2020 security update, referenced by Samsung's internal ID SVE-2019-16665.

References

  1. Samsung Mobile Security Updates: https://security.samsungmobile.com/securityUpdate.smsb
  2. Samsung's internal reference ID: SVE-2019-16665
  3. MITRE CWE-119: https://cwe.mitre.org/data/definitions/119.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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