Fedora: Security Advisory for xen (FEDORA-2020-e3d619cc32)

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

The vulnerability of the openslp hypervisor packages in VMware ESXi, VMware Workstation, and VMware Fusion allows a malicious actor to execute arbitrary code, cause system failures, or gain unauthorized access to protected information.

The vulnerability of the openslp hypervisor packages in VMware ESXi, VMware Workstation, and VMware Fusion relates to the use of memory after deallocation. Exploiting this vulnerability can allow an attacker to execute arbitrary code, cause system failures, or gain unauthorized access to protecte...

[SECURITY] Fedora 33 Update: xen-4.14.0-6.fc33

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

Fedora: Security Advisory for xen (FEDORA-2020-97775b4234)

The remote host is missing an update for the SPDX-FileCopyrightText: 2020 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

CVE-2020-27672

A race condition flaw was found in the Xen code responsible for handling the updating of the hypervisor's own page tables. This flaw allows a malicious guest to cause a denial of service, host data corruption, or potential privilege escalation. The highest threat from this vulnerability is to...

CVE-2020-27674

A flaw was found in the Xen hypercalls with INVLPG-like behavior used by x86 PV guests to invalidate TLB entries. This flaw allows a malicious unprivileged guest user to escalate their privileges to the kernel level within the guest. Mitigation There is no known mitigation for this flaw apart fro...

Xen Migrating Timers Race condition DoS (XSA-336)

According to its self-reported version number, the Xen hypervisor installed on the remote host is affected by a denial of service DoS vulnerability. When migrating timers of x86 HVM guests between its vCPU-s, the locking model used allows for a second vCPU of the same guest also operating on the...

DEBIAN-CVE-2020-27673

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service host OS hang via a high rate of events to dom0, aka CID-e99502f76271...

DEBIAN-CVE-2020-27674

An issue was discovered in Xen through 4.14.x allowing x86 PV guest OS users to gain guest OS privileges by modifying kernel memory contents, because invalidation of TLB entries is mishandled during use of an INVLPG-like attack technique...

DEBIAN-CVE-2020-27675

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. drivers/xen/events/eventsbase.c allows event-channel removal during the event-handling loop a race condition. This can cause a use-after-free or NULL pointer dereference, as demonstrated by a dom0 crash vi...

UBUNTU-CVE-2020-27673

An issue was discovered in the Linux kernel through 5.9.1, as used with Xen through 4.14.x. Guest OS users can cause a denial of service host OS hang via a high rate of events to dom0, aka CID-e99502f76271...

CVE-2020-27670

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service data corruption, cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated...

Oracle VirtualBox Shader Bytecode Type Confusion Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

Oracle VirtualBox Shader Bytecode Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

Oracle VirtualBox Shader Bytecode Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

The vulnerability of the Hyper-V hardware virtualization system in the Windows operating system allows a hacker to gain increased privileges.

The vulnerability of the Hyper-V hardware virtualization technology in the Windows operating system relates to operations that go beyond the buffer limits in memory. Exploiting this vulnerability can allow an attacker to gain increased privileges...

Oracle VirtualBox Shader Bytecode Out-Of-Bounds Read Information Disclosure Vulnerability

This vulnerability allows local attackers to disclose sensitive information on affected installations of Oracle VirtualBox. An attacker must first obtain the ability to execute high-privileged code on the target guest system in order to exploit this vulnerability. The specific flaw exists within...

VMSA-2020-0023 : VMware ESXi, Workstation, Fusion and NSX-T updates address multiple security vulnerabilities

a. ESXi OpenSLP remote code execution vulnerability CVE-2020-3992 OpenSLP as used in ESXi has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remo...

CVE-2020-3995

In VMware ESXi 6.7 before ESXi670-201908101-SG, 6.5 before ESXi650-202007101-SG, Workstation 15.x before 15.1.0, Fusion 11.x before 11.1.0, the VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigg...

CVE-2020-3995

In VMware ESXi 6.7 before ESXi670-201908101-SG, 6.5 before ESXi650-202007101-SG, Workstation 15.x before 15.1.0, Fusion 11.x before 11.1.0, the VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigg...