#VU28314 Time-of-check Time-of-use (TOCTOU) Race Condition in macOS - CVE-2020-9839

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU28314

#VU28314 Time-of-check Time-of-use (TOCTOU) Race Condition in macOS - CVE-2020-9839

Published: May 28, 2020 / Updated: October 9, 2021


Vulnerability identifier: #VU28314
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2020-9839
CWE-ID:
Exploitation vector: Local access
Exploit availability: The vulnerability is being exploited in the wild
Vulnerable software:
macOS
Software vendor:
Apple Inc.

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a lack of proper locking when performing operations on an object within the handling of file permissions. An local user can gain elevated privileges on the target system.


Remediation

Install updates from vendor's website.

External links