FreeBSD : qemu, xen-tools -- use-after-free in QEMU/Xen block unplug protocol (ee99899d-4347-11e5-93ad-002590263bf5)

The Xen Project reports : When unplugging an emulated block device the device was not fully unplugged, meaning a second unplug attempt would attempt to unplug the device a second time using a previously freed pointer. An HVM guest which has access to an emulated IDE disk device may be able to...

OracleVM 3.3 : xen (OVMSA-2015-0111)

The remote OracleVM system is missing necessary patches to address critical security updates in xen %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks in this plugin were extracted from OracleVM Security Advisory OVMSA-2015-0111. include'deprecatednasllevel.inc';...

FreeBSD : qemu, xen-tools -- QEMU heap overflow flaw with certain ATAPI commands (da451130-365d-11e5-a4a5-002590263bf5)

The Xen Project reports : A heap overflow flaw was found in the way QEMU's IDE subsystem handled I/O buffer access while processing certain ATAPI commands. A privileged guest user in a guest with CDROM drive enabled could potentially use this flaw to execute arbitrary code on the host with the...

OracleVM 3.2 : xen (OVMSA-2015-0096)

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0096 for details. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks in this plugin were extracted from OracleVM Security Advisory...

FreeBSD : xen-tools -- Unmediated PCI command register access in qemu (79f401cd-27e6-11e5-a4a5-002590263bf5)

The Xen Project reports : HVM guests are currently permitted to modify the memory and I/O decode bits in the PCI command register of devices passed through to them. Unless the device is an SR-IOV virtual function, after disabling one or both of these bits subsequent accesses to the MMIO or I/O po...

FreeBSD : xen-tools -- xl command line config handling stack overflow (f1deed23-27ec-11e5-a4a5-002590263bf5)

The Xen Project reports : The xl command line utility mishandles long configuration values when passed as command line arguments, with a buffer overrun. A semi-trusted guest administrator or controller, who is intended to be able to partially control the configuration settings for a domain, can...

FreeBSD : xen-tools -- PCI MSI mask bits inadvertently exposed to guests (4db8a0f4-27e9-11e5-a4a5-002590263bf5)

The Xen Project reports : The mask bits optionally available in the PCI MSI capability structure are used by the hypervisor to occasionally suppress interrupt delivery. Unprivileged guests were, however, nevertheless allowed direct control of these bits. Interrupts may be observed by Xen at...

FreeBSD : xen-tools -- HVM qemu unexpectedly enabling emulated VGA graphics backends (0d732fd1-27e0-11e5-a4a5-002590263bf5)

The Xen Project reports : When instantiating an emulated VGA device for an x86 HVM guest qemu will by default enable a backend to expose that device, either SDL or VNC depending on the version of qemu and the build time configuration. The libxl toolstack library does not explicitly disable these...

FreeBSD : xen-tools -- Potential unintended writes to host MSI message data field via qemu (af38cfec-27e7-11e5-a4a5-002590263bf5)

The Xen Project reports : Logic is in place to avoid writes to certain host config space fields when the guest must nevertheless be able to access their virtual counterparts. A bug in how this logic deals with accesses spanning multiple fields allows the guest to write to the host MSI message dat...

OracleVM 3.2 : xen (OVMSA-2015-0068) (POODLE) (Venom)

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0068 for details. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks in this plugin were extracted from OracleVM Security Advisory...

OracleVM 3.3 : xen (OVMSA-2015-0031)

The remote OracleVM system is missing necessary patches to address critical security updates : - x86emul: fully ignore segment override for register-only operations For ModRM encoded instructions with register operands we must not overwrite ea.mem.seg if a - bogus in that case - segment override...

OracleVM 3.2 : xen (OVMSA-2015-0028)

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2015-0028 for details. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks in this plugin were extracted from OracleVM Security Advisory...

OracleVM 3.1 : xen (OVMSA-2013-0001)

The remote OracleVM system is missing necessary patches to address critical security updates : - VT-d: fix interrupt remapping source validation for devices behind legacy bridges Using SVTVERIFYBUS here doesn't make sense native Linux also uses SVTVERIFYSIDSQ here instead. CVE-2012-5634 - When xe...

OracleVM 3.1 : xen (OVMSA-2013-0068)

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2013-0068 for details. %NASLMINLEVEL 70300 C Tenable Network Security, Inc. The package checks in this plugin were extracted from OracleVM Security Advisory...

OracleVM 3.1 : xen (OVMSA-2012-0021)

The remote OracleVM system is missing necessary patches to address critical security updates : - x86-64: detect processors subject to AMD erratum 121 and refuse to bootCVE-2006-0744 - guest denial of service on syscall/sysenter exception generation CVE-2012-0217,CVE-2012-0218 - Remove unnecessary...

OracleVM 3.1 : xen (OVMSA-2014-0010)

The remote OracleVM system is missing necessary patches to address critical security updates : - page-alloc: scrub pages used by hypervisor upon freeing ... unless they're part of a fully separate pool and hence can't ever be used for guest allocations. This is XSA-100. %NASLMINLEVEL 70300 C...

openSUSE Security Update : xen-201105 (openSUSE-SU-2011:0580-1)

Collective May/2011 update for Xen Xen : - 691238 - L3: question on behaviour change xm list - 623680 - xen kernel freezes during boot when processor module is loaded - 680824 - dom0 can't recognize boot disk when IOMMU is enabled - 688473 - VUL-0: potential buffer overflow in tools - 679344 -...

input handling vulnerabilities loading guest kernel on ARM

ISSUE DESCRIPTION When loading a 32-bit ARM guest kernel the Xen tools did not correctly validate the length of the kernel against the actual image size. This would then lead to an overrun on the input buffer when loading the kernel into guest RAM CVE-2014-3714. Furthermore when checking a 32-bit...

Xen: Multiple vulnerabilities

Background Xen is a bare-metal hypervisor. Description Multiple vulnerabilities have been discovered in Xen. Please review the CVE identifiers referenced below for details. Impact Guest domains could possibly gain privileges, execute arbitrary code, or cause a Denial of Service on the host domain...

Fedora Update for xen FEDORA-2007-2708

Check for the Version of xen OpenVAS Vulnerability Test Fedora Update for xen FEDORA-2007-2708 Authors: System Generated Check Copyright: Copyright c 2009 Greenbone Networks GmbH, http://www.greenbone.net This program is free software; you can redistribute it and/or modify it under the terms of t...