#VU9043 Improper access control in macOS - CVE-2017-13786

Vulnerability identifier: #VU9043

Vulnerability risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2017-13786

CWE-ID: CWE-284

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description
The vulnerability allows a local attacker to bypass security restrictions on the target system.

The weakness exists due to a DMA access control flaw in the APFS component. A local attacker with a connected Thunderbolt adapter can recover unencrypted APFS filesystem data.

Mitigation
Update to version 10.13.1.

Vulnerable software versions

macOS: 10.12.4 16E195 - 10.12.6 16G29

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External links
https://support.apple.com/en-us/HT208221

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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.