#VU15451 Information disclosure in macOS - CVE-2018-3646

Vulnerability identifier: #VU15451

Vulnerability risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3646

CWE-ID: CWE-200

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
macOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

Description

The vulnerability allows an adjacent attacker to obtain potentially sensitive information on the target system.

The weakness exists on the systems with microprocessors utilizing speculative execution and address translations due to an error in Hypervisor. An adjacent attacker can access information residing in the L1 data cache via a terminal page fault and a side-channel analysis.

Mitigation
Update to version 10.14.1.

Vulnerable software versions

macOS: 10.12.6 16G29 - 10.13.6 17G66

---

External links
https://support.apple.com/en-us/HT209193

---

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.