ESXi 5.5 / 6.0 / 6.5 / 6.7 Speculative Execution Side Channel Vulnerability (Foreshadow) (VMSA-2018-0020) (remote check)

medium Nessus Plugin ID 111759
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote VMware ESXi host is missing a security patch and is affected by a speculative execution side channel vulnerability.

Description

The remote VMware ESXi host is version 5.5, 6.0, 6.5, or 6.7 and is missing a security patch. It is, therefore, vulnerable to a speculative execution side channel attack known as L1 Terminal Fault (L1TF). An attacker who successfully exploited L1TF may be able to read privileged data across trust boundaries.

Solution

Apply the appropriate patch as referenced in the vendor advisory.

See Also

https://www.vmware.com/security/advisories/VMSA-2018-0020.html

https://foreshadowattack.eu/

Plugin Details

Severity: Medium

ID: 111759

File Name: vmware_esxi_VMSA-2018-0020.nasl

Version: 1.7

Type: remote

Family: Misc.

Published: 8/15/2018

Updated: 9/2/2020

Dependencies: vmware_vsphere_detect.nbin

Risk Information

CVSS Score Source: CVE-2018-3646

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.5

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

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Medium

Base Score: 5.6

Temporal Score: 4.9

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

Temporal Vector: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:vmware:esxi

Required KB Items: Host/VMware/version, Host/VMware/release, Host/VMware/vsphere

Exploit Ease: No known exploits are available

Patch Publication Date: 8/14/2018

Vulnerability Publication Date: 8/14/2018

Reference Information

CVE: CVE-2018-3646

BID: 105080

VMSA: 2018-0020