PVS 7.13: XenServer PVS-Accelerator Cache Storage Considerations

Note: This feature is only available in XenServer 7.1 and PVS 7.13 or later. PVS-Accelerator provides two cache modes: Memory only , in the Control Domain Dom0 Memory. When selecting Memory only, the feature will use up to the specified cache size in the Dom0 memory. This option is only available...

PVS 7.13: XenServer PVS-Accelerator Introduction and Requirements

Note : This feature is only available in XenServer 7.1 and PVS 7.13 or later. XenServer PVS-Accelerator feature offers additional capabilities for customers using XenServer and Citrix Provisioning Services PVS. With this feature, the read requests from a PVS target device can now be cached on eac...

How to change control domain memory using XenCenter in XenServer 7.1 and higher?

This article describes the method to change the amount of memory allocated to the Control Domain using XenCenter...

Citrix XenServer Multiple Vulnerabilities (CTX220771)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by the following vulnerabilities : - A flaw exists in the blitregionisunsafe function within file hw/display/cirrusvga.c when handling a backward mode bitblt copy. A guest attacker...

How to Generate a Crashdump from an Unresponsive XenServer 7

This article describes how to generate a crashdump from an unresponsive XenServer 7. If XenServer crashes, the running kernel can migrate into a special memory area which is based on kexec functions that loads a special kernel without the need for a server cold restart. This new kernel attempts t...

XAPI Keeps Maintenance Mode For A Long Time After Restarting XenServer

XAPI keeps maintenance mode long time after restarting XenServer every time. This issue is happening from XenServer env was configured first. XAPI can't create network connection to other pool member and xenbr0 raise a network error. Sep 10 19:36:08 XXXX fe: 5481 /sbin/ip addr add...

Citrix XenServer Multiple Security Updates (CTX220771)

Two security issues have been identified within Citrix XenServer. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only CPE =...

XenServer 7 Host Crash while starting multiple Virtual Machine

XenServer 7 Hosts crashes with below call traces while trying to start multiple vGPU attached Virtual Machines. The following trace can be found in xen.log in the crash folder /var/log/crash: XEN 101632.198343 ---- Xen-4.6.1-xs128153 x8664 debug=n Not tainted ----XEN 101632.198344 CPU: 5XEN...

Citrix XenServer Linux Foundation xapi Security Bypass Vulnerability

Citrix XenServer is a virtualization solution. A security vulnerability in Citrix XenServer Linux Foundation xapi allows remote attackers to exploit the vulnerability to submit a special request and corrupt the host database...

Citrix XenServer Linux Foundation xapi Security Bypass Vulnerability (CNVD-2017-01230)

Citrix XenServer is a virtualization solution. A security vulnerability exists in Citrix XenServer Linux Foundation xapi, which allows remote attackers to exploit the vulnerability to submit a special request to cancel an administrator job...

Citrix XenServer Multiple Vulnerabilities (CTX220112)

The version of Citrix XenServer running on the remote host is missing a security hotfix. It is, therefore, affected by the following vulnerabilities : - A man-in-the-middle MitM vulnerability exists in the NTP component due to an improperly implemented threshold limitation for the '-g' option. A...

Design/Logic Flaw

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can corrupt the host database...

CVE-2017-5572

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can corrupt the host database...

CVE-2017-5573

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators...

CVE-2017-5573

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators...

CVE-2017-5572

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can corrupt the host database...

Design/Logic Flaw

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators...

CVE-2017-5572

CVE-2017-5572 affects Citrix XenServer (Linux Foundation xapi) up to version 7.0. An authenticated read-only administrator can corrupt the host database, as described in multiple sources. CVSS data from NVD indicates network-based access with low complexity and partial integrity/availability impa...

CVE-2017-5573

CVE-2017-5573 affects Citrix XenServer (Linux Foundation xapi). An authenticated read-only administrator can cancel tasks of other administrators. The connected documents describe the vulnerability and impact but do not provide root-cause details, affected versions beyond XenServer up to 7.0, exp...

CVE-2017-5573

An issue was discovered in Linux Foundation xapi in Citrix XenServer through 7.0. An authenticated read-only administrator can cancel tasks of other administrators...