FreeBSD : FreeBSD -- Lazy FPU State Restore Information Disclosure (4e07d94f-75a5-11e8-85d1-a4badb2f4699)

Medium Nessus Plugin ID 110653


The remote FreeBSD host is missing a security-related update.


A subset of Intel processors can allow a local thread to infer data from another thread through a speculative execution side channel when Lazy FPU state restore is used. Impact : Any local thread can potentially read FPU state information from other threads running on the host. This could include cryptographic keys when the AES-NI CPU feature is present.


Update the affected package.

See Also

Plugin Details

Severity: Medium

ID: 110653

File Name: freebsd_pkg_4e07d94f75a511e885d1a4badb2f4699.nasl

Version: 1.5

Type: local

Published: 2018/06/22

Updated: 2018/12/07

Dependencies: 12634

Configuration: Enable paranoid mode

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.7

Vector: CVSS2#AV:L/AC:M/Au:N/C:C/I:N/A:N

CVSS v3.0

Base Score: 5.6

Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:FreeBSD, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info, Settings/ParanoidReport

Patch Publication Date: 2018/06/21

Vulnerability Publication Date: 2018/06/21

Reference Information

CVE: CVE-2018-3665

FreeBSD: SA-18:07.lazyfpu