Debian DSA-3284-1 : qemu - security update

Several vulnerabilities were discovered in qemu, a fast processor emulator. - CVE-2015-3209 Matt Tait of Google's Project Zero security team discovered a flaw in the way QEMU's AMD PCnet Ethernet emulation handles multi-TMD packets with a length above 4096 bytes. A privileged guest user in a gues...

Fedora 21 : xen-4.4.2-5.fc21 (2015-9466)

Potential unintended writes to host MSI message data field via qemu XSA-128, CVE-2015-4103, PCI MSI mask bits inadvertently exposed to guests XSA-129, CVE-2015-4104, Guest triggerable qemu MSI-X pass-through error messages XSA-130, CVE-2015-4105, Unmediated PCI register access in qemu XSA-131,...

DSA-3286-1 xen - security update

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Citrix XenServer Multiple Security Updates (CTX201145)

A number of security vulnerabilities have been identified in Citrix XenServer that may allow a malicious administrator of a guest VM to crash the host. These vulnerabilities affect all currently supported versions of Citrix XenServer up to and including Citrix XenServer 6.5 Service Pack 1...

CVE-2015-4106

QEMU does not properly restrict write access to the PCI config space for certain PCI pass-through devices, which might allow local x86 HVM guests to gain privileges, cause a denial of service host crash, obtain sensitive information, or possibly have other unspecified impact via unknown vectors...

DEBIAN-CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

Code injection

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

CVE-2015-4106

QEMU does not properly restrict write access to the PCI config space for certain PCI pass-through devices, which might allow local x86 HVM guests to gain privileges, cause a denial of service host crash, obtain sensitive information, or possibly have other unspecified impact via unknown vectors...

CVE-2015-4106

CVE-2015-4106 : QEMU does not properly restrict write access to the PCI config space for certain PCI passthrough devices, which the documents describe as enabling local x86 HVM guests to gain privileges, cause host crashes, obtain sensitive information, or suffer other unspecified impact. The con...

CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

UBUNTU-CVE-2015-4105

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

CVE-2015-4105: Undefined Security Weakness

Xen 3.3.x through 4.5.x enables logging for PCI MSI-X pass-through error messages, which allows local x86 HVM guests to cause a denial of service host disk consumption via certain invalid operations...

Potential unintended writes to host MSI message data field via qemu

ISSUE DESCRIPTION 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 data field...

xen-tools -- Guest triggerable qemu MSI-X pass-through error messages

The Xen Project reports: Device model code dealing with guest PCI MSI-X interrupt management activities logs messages on certain supposedly invalid guest operations. A buggy or malicious guest repeatedly invoking such operations may result in the host disk to fill up, possibly leading to a Denial...

Non-standard PCI device functionality may render pass-through insecure

ISSUE DESCRIPTION Devices with capabilities or defects that are undocumented or that virtualization software is unaware of may allow guests to control parts of the host that they shouldn't be in control of. Here are some examples of the kind of problem: While XSA-120 deals with standard PCI confi...

Windows Pass-Through Authentication Methods Improper Validation

1. Advisory Information Title: Windows Pass-Through Authentication Methods Improper Validation Advisory ID: CORE-2015-0005 Advisory URL: http://www.coresecurity.com/advisories/windows-pass-through-authentication-methods-improper-validation Date published: 2015-03-10 Date of last update: 2015-03-1...

OracleVM 3.1 : xen (OVMSA-2013-0032)

The remote OracleVM system is missing necessary patches to address critical security updates : - defer event channel bucket pointer store until after XSM checks Otherwise a dangling pointer can be left, which would cause subsequent memory corruption as soon as the space got re-allocated for some...