CVE-2017-15595

An issue was discovered in Xen through 4.9.x allowing x86 PV guest OS users to cause a denial of service unbounded recursion, stack consumption, and hypervisor crash or possibly gain privileges via crafted page-table stacking...

CVE-2017-15589

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to obtain sensitive information from the host OS or an arbitrary guest OS because intercepted I/O operations can cause a write of data from uninitialized hypervisor stack memory...

CVE-2017-15592

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests...

CVE-2017-15592

An issue was discovered in Xen through 4.9.x allowing x86 HVM guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because self-linear shadow mappings are mishandled for translated guests...

CVE-2017-15590

An issue was discovered in Xen through 4.9.x allowing x86 guest OS users to cause a denial of service hypervisor crash or possibly gain privileges because MSI mapping was mishandled...

Xen: Multiple vulnerabilities

Background Xen is a bare-metal hypervisor. Description Multiple vulnerabilities have been discovered in Xen. Please review the referenced CVE identifiers for details. Impact A local attacker could escalate privileges, cause a Denial of Service condition, obtain sensitive information, or have othe...

Citrix XenServer Multiple Security Updates (CTX228867)

A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to compromise the host. SPDX-FileCopyrightText: 2017 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the...

xen information disclosure vulnerability (CNVD-2017-30248)

Xen is an open source virtual machine monitor developed by the Xen Project. Xen has an information disclosure vulnerability that can be exploited by attackers to obtain sensitive information...

xen memory leak vulnerability

Xen is an open source virtual machine monitor developed by the Xen Project. Xen suffers from a memory disclosure vulnerability that can be exploited by an attacker to cause a denial of service...

xen system memory access vulnerability

Xen is an open source virtual machine monitor developed by the Xen Project. The xen system has a memory access vulnerability that can be exploited by an attacker for elevation of privilege...

xen denial of service vulnerability (CNVD-2017-30247)

Xen is an open source virtual machine monitor developed by the Xen Project. Xen has a denial of service vulnerability that can be exploited by attackers to cause a denial of service...

xen elevation of privilege vulnerability (CNVD-2017-30243)

Xen is an open source virtual machine monitor developed by the Xen Project. Xen suffers from an elevation of privilege vulnerability. An attacker can exploit this vulnerability to gain elevated privileges...

x86: Incorrect handling of self-linear shadow mappings with translated guests

ISSUE DESCRIPTION The shadow pagetable code uses linear mappings to inspect and modify the shadow pagetables. A linear mapping which points back to itself is known as self-linear. For translated guests, the shadow linear mappings being in a separate address space are not intended to be self-linea...

multiple MSI mapping issues on x86

ISSUE DESCRIPTION Multiple issues exist with the setup of PCI MSI interrupts: - unprivileged guests were permitted access to devices not owned by them, in particular allowing them to disable MSI or MSI-X on any device - HVM guests can trigger a codepath intended only for PV guests - some failure...

hypervisor stack leak in x86 I/O intercept code

ISSUE DESCRIPTION Intercepted I/O operations may deal with less than a full machine word's worth of data. While read paths had been the subject of earlier XSAs and hence have been fixed, at least one write path was found where the data stored into an internal structure could contain bits from an...

How to configure console access on XenServer or Citrix Hypervisor

This article is for customers running Citrix Hypervisor or XenServer who want to configure serial console access to their XenServer hosts. In some support cases, serial console access to the XenServer host is required for debug purposes. The serial connection is to use with HyperTerminal or simil...

[SECURITY] Fedora 27 Update: xen-4.9.0-11.fc27

This package contains the XenD daemon and xm command line tools, needed to manage virtual machines running under the Xen hypervisor...

Joyent SmartOS Hyprlofs FS IOCTL Native File System Integer Overflow Privilege Escalation Vulnerability(CVE-2016-8733)

Summary An exploitable integer overflow exists in the Joyent SmartOS OS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFSADDENTRIES when dealing with native file systems. An attacker can craft an input that can cause a kernel...

Joyent SmartOS Hyprlofs FS IOCTL Native File System path Buffer Overflow Privilege Escalation Vulnerability(CVE-2016-9033)

Summary An exploitable buffer overflow exists in the the Joyent SmartOS OS 20161110T013148Z Hyprlofs file system. The vulnerability is present in the Ioctl system call with the command HYPRLOFSADDENTRIES when dealing with native file systems. An attacker can craft an input that can cause a buffer...

Xen Hypervisor Memory Leak on Boot (XSA-235)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by flaw within the pagealloc.c and asm-arm/numa.h due to not scrubbing the memory on boot. This could potentially leave sensitive information available to read after a reboot. This issue onl...