Improper Authentication in nVidia SHIELD TV

1) Improper Authentication

EUVDB-ID: #VU19969

Risk: Low

CVSSv3.1: 7.1 [CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5679

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a local attacker to bypass authentication process.

The vulnerability exists due to the Trusted OS image is improperly authenticated in the Tegra bootloader in nvtboot. A local authenticated attacker can bypass authentication process and gain unauthorized access to the application.

This vulnerability may lead to code execution, denial of service, escalation of privileges, and information disclosure.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

SHIELD TV: before 8.0

External links

http://nvidia.custhelp.com/app/answers/detail/a_id/4804

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.