#VU53369 Buffer overflow in macOS


Published: 2021-05-19

Vulnerability identifier: #VU53369

Vulnerability risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3863

CWE-ID: CWE-119

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

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

The vulnerability exists due to a boundary error in crontab implementation. A local user can create a specially crafted cron job and execute arbitrary code with elevated privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 10.15 19A583 - 10.15.2 19C57


External links
http://support.apple.com/en-us/HT210919


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.


Latest bulletins with this vulnerability