UNIX symbolic link following in macOS - CVE-2020-3835
Published: May 19, 2021
Vulnerability identifier: #VU53368
CSH Severity: Low
CVSS v4: 4.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-3835
CWE-ID: CWE-61
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a symlink following issue in Crash Reporter. A local user can create a specially crafted symbolic link to a critical file on the system and overwrite it with privileges of the application.
Successful exploitation of this vulnerability may result in privilege escalation.
Affected software
macOS
How to mitigate CVE-2020-3835
Install updates from vendor's website.
macOS - addressed in versions 10.13.6 17G11023, 10.14.6 18G3020, 10.15.3 19D76