Detections
Analytics

Citrix XenServer Microarchitectural Data Sampling Speculative Side-Channel Vulnerabilities (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (CTX2251995)

medium Nessus Plugin ID 125549

Language:

Synopsis

A server virtualization platform installed on the remote host is missing a security patch.

Description

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by microarchitectural data sampling speculative side-channel vulnerabilities. These vulnerabilities may allow a local attacker on a guest machine to sample the contents of memory reads and writes. Please refer to the vendor advisory for mitigating factors.

Solution

Apply the appropriate hotfix according to the vendor advisory.

See Also

https://support.citrix.com/article/CTX251995

Plugin Details

Severity: Medium

ID: 125549

File Name: citrix_xenserver_CTX251995.nasl

Version: 1.5

Type: local

Family: Misc.

Published: 5/30/2019

Updated: 2/18/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 4.7

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-11091

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.9

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

CVSS Score Source: manual

Vulnerability Information

CPE: cpe:/a:citrix:xenserver

Required KB Items: Host/XenServer/version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/14/2019

Vulnerability Publication Date: 5/14/2019

Reference Information

CVE: CVE-2018-12126, CVE-2018-12127, CVE-2018-12130, CVE-2019-11091

BID: 108330