#VU53373 Out-of-bounds read in macOS


Published: 2021-05-19

Vulnerability identifier: #VU53373

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-3870

CWE-ID: CWE-125

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing JPEG files in ImageIO. A remote attacker can create a specially crafted JPEG file, trick the victim into opening it, trigger an out-of-bounds read error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 10.15 19A583 - 10.15.2 19C57, 10.14 18A391 - 10.14.6 18G2022, 10.13 17A365 - 10.13.6 17G10021


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


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.


Latest bulletins with this vulnerability