CVE Vulnerabilities

CVE-2019-20610

Time-of-check Time-of-use (TOCTOU) Race Condition

Published: Mar 24, 2020 | Modified: Aug 24, 2020
CVSS 3.x
8.1
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
9.3 HIGH
AV:N/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

An issue was discovered on Samsung mobile devices with N(7.X) and O(8.X) (Exynos 7570, 7870, 7880, 7885, 8890, 8895, and 9810 chipsets) software. A double-fetch vulnerability in Trustlet allows arbitrary TEE code execution. The Samsung ID is SVE-2019-13910 (April 2019).

Weakness

The product checks the state of a resource before using that resource, but the resource’s state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state.

Affected Software

Name Vendor Start Version End Version
Android Google 7.0 (including) 7.0 (including)
Android Google 7.1.0 (including) 7.1.0 (including)
Android Google 7.1.1 (including) 7.1.1 (including)
Android Google 7.1.2 (including) 7.1.2 (including)
Android Google 8.0 (including) 8.0 (including)
Android Google 8.1 (including) 8.1 (including)

Potential Mitigations

References