August 23, 2016 — KB3176934 (OS Build 14393.82)

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[SECURITY] Fedora 23 Update: xen-4.5.3-9.fc23

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

DEBIAN-CVE-2016-5412

arch/powerpc/kvm/book3shvrmhandlers.S in the Linux kernel through 4.7 on PowerPC platforms, when CONFIGKVMBOOK3S64HV is enabled, allows guest OS users to cause a denial of service host OS infinite loop by making a HCEDE hypercall during the existence of a suspended transaction...

[SECURITY] Fedora 24 Update: xen-4.6.3-4.fc24

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

VMware Releases Security Update

VMware has released a security update to address vulnerabilities in vCenter Server, vSphere Hypervisor ESXi, Workstation Pro, Workstation Player, Fusion, and Tools. Exploitation of one of these vulnerabilities could allow a remote attacker to take control of an affected system. US-CERT encourages...

VMware vSphere Hypervisor (ESXi) HTTP Response Injection

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 Advisory ID: SYSS-2016-063 Product: VMware vSphere Hypervisor ESXi Manufacturer: VMware, Inc. Affected Versions: VMware ESXi 6.0.0 build 3380124 Update 1 VMware vCenter Server 6.0 U2 Tested Versions: VMware ESXi 6.0.0 build 3380124 Update 1...

Unable to Communicate With Hypervisor When Using XenDesktop Setup Wizard

Unable to Communicate with Hypervisor when using XenDesktop Setup Wizard. Logs display, "object reference not set to instance of an object" When running XenDesktop Setup Wizard, error states, "cannot connect to hypervisor" Logs shows an error when checking a particular hosting unit. Checked Host...

Xen Privilege Escalation (XSA-182) (Bunker Buster)

According to its self-reported version number, the remote Xen hypervisor is affected by a privilege escalation vulnerability in the paravirtualization PV pagetable implementation due to incorrect usage of fast-paths for making updates to pre-existing pagetable entries. An attacker with...

CVE-2016-6259

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

DEBIAN-CVE-2016-6259

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

ALPINE-CVE-2016-6259

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

UBUNTU-CVE-2016-6259

Xen 4.5.x through 4.7.x do not implement Supervisor Mode Access Prevention SMAP whitelisting in 32-bit exception and event delivery, which allows local 32-bit PV guest OS kernels to cause a denial of service hypervisor and VM crash by triggering a safety check...

CVE-2016-6259

CVE-2016-6259 affects Xen 4.5.x–4.7.x where SMAP whitelisting is not implemented for 32-bit exception/event delivery. This enables local 32-bit PV guests to trigger a safety check that can crash the hypervisor or VMs (DoS). The root cause is missing Supervisor Mode Access Prevention whitelisting ...

FreeBSD : xen-kernel -- x86: Missing SMAP whitelisting in 32-bit exception / event delivery (04cf89e3-5854-11e6-b334-002590263bf5)

The Xen Project reports : Supervisor Mode Access Prevention is a hardware feature designed to make an Operating System more robust, by raising a pagefault rather than accidentally following a pointer into userspace. However, legitimate accesses into userspace require whitelisting, and the excepti...

Debian Security Advisory DSA 3633-1 (xen - security update)

Multiple vulnerabilities have been discovered in the Xen hypervisor. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2015-8338 Julien Grall discovered that Xen on ARM was susceptible to denial of service via long running memory operations. CVE-2016-4480 Jan...

Cisco Nexus 1000v Application Virtual Switch Cisco Discovery Protocol Packet Processing Denial of Service Vulnerability (cisco-sa-20160727-avs)

A vulnerability in Cisco Discovery Protocol packet processing for the Cisco Nexus 1000v Application Virtual Switch AVS could allow an unauthenticated, remote attacker to cause the ESXi hypervisor to crash and display a purple diagnostic screen, resulting in a denial of service DoS condition...

Debian DSA-3633-1 : 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-2015-8338 Julien Grall discovered that Xen on ARM was susceptible to denial of service via long running memory operations. - CVE-2016-448...

CVE-2016-1465

Cisco Nexus 1000v Application Virtual Switch AVS devices before 5.21SV31.5i allow remote attackers to cause a denial of service ESXi hypervisor crash and purple screen via a crafted Cisco Discovery Protocol packet that triggers an out-of-bounds memory access, aka Bug ID CSCuw57985...

[SECURITY] [DSA 3633-1] xen security update

------------------------------------------------------------------------- Debian Security Advisory DSA-3633-1 [email protected] https://www.debian.org/security/ Moritz Muehlenhoff July 27, 2016 https://www.debian.org/security/faq -...

Cisco Nexus 1000v Application Virtual Switch Cisco Discovery Protocol Packet Processing Denial of Service Vulnerability

A vulnerability in Cisco Discovery Protocol packet processing for the Cisco Nexus 1000v Application Virtual Switch AVS could allow an unauthenticated, remote attacker to cause the ESXi hypervisor to crash and display a purple diagnostic screen, resulting in a denial of service DoS condition. The...