Fedora Update for xen FEDORA-2019-3d7105bd2a

The remote host is missing an update for the Copyright C 2019 Greenbone Networks GmbH 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-or-later This program is free software; you can...

SUSE-SU-2019:3296-1 Security update for xen

This update for xen fixes the following issues: - CVE-2019-19581: Fixed a potential out of bounds on 32-bit Arm bsc1158003 XSA-307. - CVE-2019-19582: Fixed a potential infinite loop when x86 accesses to bitmaps with a compile time known size of 64 bsc1158003 XSA-307. - CVE-2019-19583: Fixed...

[SECURITY] Fedora 30 Update: xen-4.11.2-4.fc30

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

Xen Denial of Service Vulnerability (CNVD-2020-07294)

Xen is an open source virtual machine monitor product. A denial of service vulnerability exists in Xen 4.12. and earlier versions. The vulnerability stems from improper handling of certain bit iterations. An attacker could exploit this vulnerability to cause a denial of service...

CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

DEBIAN-CVE-2019-19582

An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service infinite loop because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which...

CVE-2019-19582

An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service infinite loop because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which...

CVE-2019-19578

An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via degenerate chains of linear pagetables, because of an incorrect fix for CVE-2017-15595. "Linear pagetables" is a technique which involves either pointing a pagetable at itself, or to...

UBUNTU-CVE-2019-19581

An issue was discovered in Xen through 4.12.x allowing 32-bit Arm guest OS users to cause a denial of service out-of-bounds access because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves...

UBUNTU-CVE-2019-19577

An issue was discovered in Xen through 4.12.x allowing x86 AMD HVM guest OS users to cause a denial of service or possibly gain privileges by triggering data-structure access during pagetable-height updates. When running on AMD systems with an IOMMU, Xen attempted to dynamically adapt the number ...

Design/Logic Flaw

An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service infinite loop because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which...

CVE-2019-19582

An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service infinite loop because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which...

CVE-2019-19578

An issue was discovered in Xen through 4.12.x allowing x86 PV guest OS users to cause a denial of service via degenerate chains of linear pagetables, because of an incorrect fix for CVE-2017-15595. "Linear pagetables" is a technique which involves either pointing a pagetable at itself, or to...

CVE-2019-19582

An issue was discovered in Xen through 4.12.x allowing x86 guest OS users to cause a denial of service infinite loop because certain bit iteration is mishandled. In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which...

find_next_bit() issues

ISSUE DESCRIPTION In a number of places bitmaps are being used by the hypervisor to track certain state. Iteration over all bits involves functions which may misbehave in certain corner cases: - On 32-bit Arm accesses to bitmaps with bit a count which is a multiple of 32, an out of bounds access...

Latest Microsoft Update Patches New Windows 0-Day Under Active Attack

With its latest and last Patch Tuesday for 2019, Microsoft is warning billions of its users of a new Windows zero-day vulnerability that attackers are actively exploiting in the wild in combination with a Chrome exploit to take remote control over vulnerable computers. Microsoft's December securi...

Citrix Hypervisor Security Update

Description of Problem A number of vulnerabilities have been found in Citrix Hypervisor formerly Citrix XenServer that may: i. Allow the host to be compromised by privileged code in a PV guest VM, ii. allow unprivileged code in a HVM guest VM to cause that guest to crash and iii. under certain...

Xen CVE-2019-19583 Denial of Service Vulnerability

Description Xen is prone to a denial-of-service vulnerability. Attackers can exploit this issue to crash the affected application, denying service to legitimate users. Xen Xen version through 4.12.0 are vulnerable. Technologies Affected Citrix Hypervisor 8.0 Citrix XenServer 7.0 Citrix XenServer...

Xen CVE-2019-19577 Denial of Service Vulnerability

Description Xen is prone to a denial-of-service vulnerability. Attackers can exploit this issue to crash the affected application, denying service to legitimate users. Xen Xen version through 4.12.0 are vulnerable. Technologies Affected Citrix Hypervisor 8.0 Citrix XenServer 7.0 Citrix XenServer...

Xen CVE-2019-19580 Incomplete Fix Local Privilege Escalation Vulnerability

Description Xen is prone to a local privilege-escalation vulnerability. Local attacker can exploit this issue to gain elevated privileges on affected computers. Xen version 4.12.x and prior are vulnerable. Technologies Affected Citrix Hypervisor 8.0 Citrix XenServer 7.0 Citrix XenServer 7.1 LTSR...