The vulnerability of Xen hypervisors allows a attacker to trigger a service failure or gain privileged access to the host.

The vulnerability of Xen hypervisors is related to deficiencies in access control for GNTMAPdevicemap and GNTMAPhostmap provided that GNTMAPhostmap is in the unmapping mode. Exploiting this vulnerability can allow a malicious actor to cause a service failure memory corruption or gain privileged...

x86: Mishandling of instruction pointer truncation during emulation

ISSUE DESCRIPTION When emulating HVM instructions, Xen uses a small i-cache for fetches from guest memory. The code that handles cache misses does not check if the address from which it fetched lies within the cache before blindly writing to it. As such it is possible for the guest to overwrite...

Debian DLA-571-1 : xen security update (Bunker Buster)

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems : CVE-2014-3672 XSA-180 Andrew Sorensen discovered that a HVM domain can exhaust the hosts disk space by filling up the log file. CVE-2016-3158,...

Matrix42 Remote Control Host 3.20.0031 Privilege Escalation

Exploit Title: Matrix42 Remote Control Host - Unquoted Path Privilege Escalation Date: 06-05-2016 Exploit Author: Roland C. Redl Vendor Homepage: https://www.matrix42.com/ Software Link: n/a Version: 3.20.0031 Tested on: Windows 7 Enterprise SP1 x64 CVE : n/a 1. Description: sc qc...

qemu/kvm: i8254: out-of-bounds memory access in pit_ioport_read function

An out-of-bounds memory access flaw, leading to memory corruption or possibly an information leak, was found in QEMU's pitioportread function. A privileged guest user in a QEMU guest, which had QEMU PIT emulation enabled, could potentially, in rare cases, use this flaw to execute arbitrary code o...

NEW VMSA-2015-0005 : VMware Workstation, Player and Horizon View Client for Windows updates address a host privilege escalation vulnerability

------------------------------------------------------------------------ VMware Security Advisory Advisory ID: VMSA-2015-0005 Synopsis: VMware Workstation, Player and Horizon View Client for Windows updates address a host privilege escalation vulnerability Issue date: 2015-07-09 Updated on:...

kernel: vhost-net: insufficiency in handling of big packets in handle_rx()

drivers/vhost/net.c in the Linux kernel before 3.13.10, when mergeable buffers are disabled, does not properly validate packet lengths, which allows guest OS users to cause a denial of service memory corruption and host OS crash or possibly gain privileges on the host OS via crafted packets,...

VMware Player 5.x < 5.0.3 Host Privilege Escalation (VMSA-2013-0013)

The installed version of VMware Player 5.x running on Linux is earlier than 5.0.3. It therefore reportedly contains a vulnerability in its handling of shared libraries. This issue may allow a local, malicious user to escalate privileges to root on the host. C Tenable Network Security, Inc...

virt: VT-d (PCI passthrough) MSI trap injection

Xen 4.1 before 4.1.1 and 4.0 before 4.0.2, when using PCI passthrough on Intel VT-d chipsets that do not have interrupt remapping, allows guest OS users to gain host OS privileges by "using DMA to generate MSI interrupts by writing to the interrupt injection registers."...