Security Bulletin: NVIDIA SHIELD TV - August 2019

Answer ID 4804
Updated 09/09/2019 07:36 PM

NVIDIA has released a software security update for NVIDIA SHIELD® TV. This update addresses issues that may lead to information disclosure, code execution, or escalation of privileges. To protect your system, download and install this software update through Settings>About>System update.

Go to NVIDIA Product Security.


Details

This section summarizes the potential impact that this security update addresses. Descriptions use CWE™, and base scores and vectors use CVSS V3 standards.

SHIELD TV update includes Android™ Security Patch level 2019-07-05. For more information about what is included in Android security patch levels, refer to the Android Security Bulletins.

 
CVE Description Base Score Vector
CVE‑2018‑6241 NVIDIA Tegra Gralloc module contains a vulnerability in the driver in which missing the input parameter checking of the register buffer API may lead to arbitrary code execution, denial of service or escalation of privileges. 9.3 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVE‑2018‑6269 NVIDIA Tegra kernel driver tegra-se-elp contains a vulnerability in IOCTL handling for user mode requests in which an non-trusted pointer dereference may be made, which may lead to information disclosure, denial of service, escalation of privilege, or code injection errors. 8.8 AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CVE‑2018‑6267 NVIDIA Tegra library (libnvomx) contains a vulnerability in which a missing check of user metadata may cause user metadata to be invalid, which may lead to a denial of service or possible escalation of privileges. 8.4 AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE‑2017‑6275 NVIDIA Tegra kernel contains a vulnerability in the CORE DVFS Thermal driver where there is the potential to read or write a buffer using an index or pointer that references a memory location after the end of the buffer, which may lead to a denial of service or possible escalation of privileges. 8.4 AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
CVE‑2019‑5679 NVIDIA Tegra bootloader contains a vulnerability in nvtboot where the Trusted OS image is improperly authenticated, which may lead to code execution, denial of service, escalation of privileges, and information disclosure. 8.2 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVE‑2018‑6268 NVIDIA Tegra library contains a vulnerability in libnvmmlite_video.so, where referencing memory after it has been freed may lead to denial of service or possible escalation of privileges. 7.8 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVE‑2019‑5680 NVIDIA Tegra bootloader contains a vulnerability in nvtboot in which the nvtboot-cpu image is loaded without the load address first being validated, which may lead to code execution,denial of service, and escalation of privileges. 8.2 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVE‑2019‑5681 NVIDIA Shield TV contains a vulnerability in the custom NVIDIA API used in the mount system service where user data could be overridden, which may lead to code execution, denial of service, or information disclosure. 6.5 AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
CVE‑2019‑5682 NVIDIA SHIELD contains a vulnerability in the NVIDIA Games App where it improperly exports an Activity but does not properly restrict which applications can launch the Activity, which may lead to code execution or denial of service. 6.1 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
CVE‑2018‑6240 NVIDIA Tegra contains a vulnerability in BootRom in which a user with kernel level privileges can write an arbitrary value to an arbitrary physical address, which may lead to escalation of privileges. 8.2 AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

SHIELD TV update includes Android™ Security Patch level 2019-07-05. For more information about what is included in Android security patch levels, refer to the Android Security Bulletins.

The NVIDIA risk assessment is based on an average of risk across a diverse set of installed systems and may not represent the true risk of your local installation. NVIDIA recommends consulting a security or IT professional to evaluate the risk to your specific configuration.

Security Updates

The following table lists the software products and versions affected, and the updated versions that include this security update.

Download the updates from Settings>About>System update.

Software Product Operating System Affected Versions Updated Version
SHIELD TV Android O SHIELD Experience prior to 8.0 SHIELD Experience Upgrade 8.0

Note:

  • Earlier releases of this product are also affected. If you are using an unsupported release, upgrade to the latest release.

Mitigations

None. See Security Updates for the versions to install.

Acknowledgements

NVIDIA thanks the following reporters for reporting the issues.

  • CVE-2019-5680: Balázs Triszka
  • CVE-2019-5681: Yousra Aafer
  • CVE-2019-5682: Leron Gray (daddycocoaman)

Get the Most Up to Date Product Security Information

Visit the NVIDIA Product Security page to

  • Subscribe to security bulletin notifications
  • See the current list of NVIDIA security bulletins
  • Report a potential vulnerability in any NVIDIA supported product
  • Learn more about the vulnerability management process followed by the NVIDIA Product Security Incident Response Team (PSIRT)

Revision History

Revision Date Description
3.0 September 9, 2019 Added CVE-2018-6240 to the Details section
2.0 August 5, 2019 Updated the CVSS base score and vector for CVE-2019-5680
1.0 August 2, 2019 Initial release

Support

If you have any questions about this security bulletin, contact NVIDIA Support.

Disclaimer

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