#VU53490 Buffer overflow in macOS


Published: 2021-05-24 | Updated: 2021-06-03

Vulnerability identifier: #VU53490

Vulnerability risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2021-30712

CWE-ID: CWE-119

Exploitation vector: Local 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 in smbx. A remote attacker on the local network can send specially crafted data to the application, trigger memory corruption and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

macOS: 11.0 20A2411 - 11.3.1 20E241


External links
http://support.apple.com/en-us/HT212529
http://www.talosintelligence.com/vulnerability_reports/TALOS-2021-1258


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.


Latest bulletins with this vulnerability