#VU13337 Side-channel attack in Intel products - CVE-2018-3665

Vulnerability identifier: #VU13337

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-3665

CWE-ID: CWE-200

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
Intel Core M 32nm
Hardware solutions / Firmware
Intel Core M 45nm
Hardware solutions / Firmware
Intel Core i7 32nm
Hardware solutions / Firmware
Intel Core i7 45nm
Hardware solutions / Firmware
Intel Core i5 32nm
Hardware solutions / Firmware
Intel Core i5 45nm
Hardware solutions / Firmware
Intel Core i3 32nm
Hardware solutions / Firmware
Intel Core i3 45nm
Hardware solutions / Firmware

Vendor: Intel

Description

The vulnerability allows a local attacker to obtain potentially sensitive information.

The vulnerability exists due to utilizing the Lazy FP state restore technique for floating point state when context switching between application processes. A local attacker can conduct cache side-channel attacks and determine register values of other processes.

Note: This vulnerability is known as LazyFP.

Mitigation
Update the affected software.

Vulnerable software versions

Intel Core M 32nm: All versions

Intel Core M 45nm: All versions

Intel Core i7 32nm: All versions

Intel Core i7 45nm: All versions

Intel Core i5 32nm: All versions

Intel Core i5 45nm: All versions

Intel Core i3 32nm: All versions

Intel Core i3 45nm: All versions

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External links
https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00145.html

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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.