FreeBSD : FreeBSD -- L1 Terminal Fault (L1TF) Kernel Information Disclosure (2310b814-a652-11e8-805b-a4badb2f4699) (Foreshadow)

Medium Nessus Plugin ID 112069

Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

On certain Intel 64-bit x86 systems there is a period of time during terminal fault handling where the CPU may use speculative execution to try to load data. The CPU may speculatively access the level 1 data cache (L1D). Data which would otherwise be protected may then be determined by using side channel methods.

This issue affects bhyve on FreeBSD/amd64 systems. Impact : An attacker executing user code, or kernel code inside of a virtual machine, may be able to read secret data from the kernel or from another virtual machine.

Solution

Update the affected packages.

See Also

http://www.nessus.org/u?0c72526b

Plugin Details

Severity: Medium

ID: 112069

File Name: freebsd_pkg_2310b814a65211e8805ba4badb2f4699.nasl

Version: 1.2

Type: local

Published: 2018/08/23

Modified: 2018/08/31

Dependencies: 12634

Risk Information

Risk Factor: Medium

CVSSv2

Base Score: 4.7

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

CVSSv3

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-kernel, cpe:/o:freebsd:freebsd

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

Patch Publication Date: 2018/08/22

Vulnerability Publication Date: 2018/08/14

Reference Information

CVE: CVE-2018-3620, CVE-2018-3646

FreeBSD: SA-18:09.l1tf