CVE Vulnerabilities

CVE-2020-9921

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

Published: Oct 22, 2020 | Modified: Jul 21, 2021
CVSS 3.x
7
HIGH
Source:
NVD
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
6.9 MEDIUM
AV:L/AC:M/Au:N/C:C/I:C/A:C
RedHat/V2
RedHat/V3
Ubuntu

A memory corruption issue was addressed with improved memory handling. This issue is fixed in macOS Catalina 10.15.6. A malicious application may be able to execute arbitrary code with system privileges.

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
Mac_os_x Apple * 10.15.6 (excluding)

Potential Mitigations

References