Troubleshooting thin provisioning for shared block storage on XenServer

XenServer and Citrix Hypervisor use GFS2 to provide the ability to set up thin provisioning with a shared block storage device. Pools that use GFS2 to thin provision their shared block storage are clustered and behave differently to pools that use shared file-based storage or LVM with shared bloc...

How To Enable Thin Provisioning On XenServer

This article explains how to enable Thin Provisioning on XenServer...

Citrix XenServer Multiple Vulnerabilities (CTX235748)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities. C Tenable Network Security, Inc. include'compat.inc'; if description scriptid111378; scriptversion"1.6";...

XenServer - How to Login iSCSI Target

This article explains how to login iSCSI target...

XenServer - Failed to Attach Local Storage

Failed to attach local storage...

Dell EMC iDRAC Insecure File Permissions Vulnerability

The Dell EMC iDRAC Service Module iSM is a suite of lightweight software from Dell Inc. that runs on servers. The software extends the Integrated Dell EMC Remote Access Controller iDRAC to the host operating system. A security vulnerability exists in the Dell EMC iSM for Linux and XenServer based...

Citrix XenServer Multiple Security Updates

Description of Problem Two issues have been identified within Citrix XenServer, which could, if exploited, allow unprivileged code in a PV guest VM to cause the host to crash or become unresponsive. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and...

Citrix XenServer Information Disclosure Vulnerability (CTX235225)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by an information disclosure vulnerability. C Tenable Network Security, Inc. include"compat.inc"; if description scriptid110779; scriptversion"1.3"; scriptcvsdate"Date: 2019/11/04";...

Default credentials

Dell EMC iDRAC Service Module for all supported Linux and XenServer versions v3.0.1, v3.0.2, v3.1.0, v3.2.0, when started, changes the default file permission of the hosts file of the host operating system /etc/hosts to world writable. A malicious low privileged operating system user or process...

CVE-2018-11053

Dell EMC iDRAC Service Module for all supported Linux and XenServer versions v3.0.1, v3.0.2, v3.1.0, v3.2.0, when started, changes the default file permission of the hosts file of the host operating system /etc/hosts to world writable. A malicious low privileged operating system user or process...

CVE-2018-11053

Dell EMC iDRAC Service Module for all supported Linux and XenServer versions v3.0.1, v3.0.2, v3.1.0, v3.2.0, when started, changes the default file permission of the hosts file of the host operating system /etc/hosts to world writable. A malicious low privileged operating system user or process...

CVE-2018-11053

Dell EMC iDRAC Service Module (iSM) affects Linux and XenServer hosts; affected versions are v3.0.1, v3.0.2, v3.1.0, and v3.2.0. The root cause is that the module, on startup, changes the host OS file /etc/hosts to world-writable, enabling a low-privilege attacker to modify the hosts file and pot...

CVE-2018-11053 iSM: Dell EMC iDRAC Service Module Improper File Permission Vulnerability

Dell EMC iDRAC Service Module for all supported Linux and XenServer versions v3.0.1, v3.0.2, v3.1.0, v3.2.0, when started, changes the default file permission of the hosts file of the host operating system /etc/hosts to world writable. A malicious low privileged operating system user or process...

What are the supported disk platforms to install XenServer on?

Question : What are the supported disk platforms to install XenServer on? Answer : For information about supported hardware, see the Hardware Compatibility List HCL: https://hcl.xenserver.com/ You can also refer to the Citrix Hypervisor 8.2 CU1 product documentation. When installing XenServer, yo...

CVE-2018-3665 - Citrix XenServer Security Update

Description of Problem An issue has been identified in certain CPUs that may allow code running in a guest VM to read data from another process in the same VM or another VM running on the same host. The data that can be read is limited to specific CPU registers rather than memory or disk storage;...

Citrix XenServer Local Memory Disclosure Vulnerability (CTX235225)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by a local memory disclosure vulnerability. C Tenable Network Security, Inc. include'compat.inc'; if description scriptid110265; scriptversion"1.7";...

Citrix XenServer Multiple Vulnerabilities (CTX234679)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by multiple vulnerabilities. C Tenable Network Security, Inc. include'compat.inc'; if description scriptid109725; scriptversion"1.9";...

How to troubleshoot XenServer USB Passthrough related issues

This article describes common error scenarios as well as general troubleshooting tips for XenServer USB Passthrough feature...

How to configure USB Passthrough with XenServer

This article describes the method to configure USB Pass-through with XenServer...

Citrix XenServer Multiple Security Updates

Description of Problem A number of security vulnerabilities have been identified in Citrix XenServer that may allow malicious code running in a PV guest VM to compromise the host and malicious privileged code running in an HVM guest VM to crash the host. These vulnerabilities affect all currently...