Information disclosure in Intel processors

1) Side-channel attack

EUVDB-ID: #VU13337

Risk: Low

CVSSv3.1: 4.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-3665

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

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

External links

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

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.