Detections
Analytics
Xen Project Microarchitectural Data Sampling Speculative Side-Channel Vulnerabilities (MDSUM/RIDL) (MFBDS/RIDL/ZombieLoad) (MLPDS/RIDL) (MSBDS/Fallout) (XSA-297)
medium Nessus Plugin ID 125389
Language:
Synopsis
The remote Xen hypervisor installation is missing a security update.Description
According to its self-reported version number, the Xen hypervisor installed on the remote host is 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. Only a subset of Intel x86 processors are affected.Note that Nessus has checked the changeset versions based on the xen.git change log. Nessus did not check guest hardware configurations or if patches were applied manually to the source code before a recompile and reinstall.
Solution
Apply the appropriate patch according to the vendor advisory.See Also
Plugin Details
Severity: Medium
ID: 125389
File Name: xen_server_XSA-297.nasl
Version: 1.5
Type: local
Family: Misc.
Published: 5/24/2019
Updated: 5/27/2024
Configuration: Enable paranoid mode
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: 5.6
Temporal Score: 5.1
Vector: CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:xen:xen
Required KB Items: Settings/ParanoidReport, installed_sw/Xen Hypervisor
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
IAVA: 2019-A-0168-S