Qemu: cirrus: heap buffer overflow via vnc connection

A heap buffer overflow flaw was found in QEMU's Cirrus CLGD 54xx VGA emulator's VNC display driver support; the issue could occur when a VNC client attempted to update its display after a VGA operation is performed by a guest. A privileged user/process inside a guest could use this flaw to crash...

Qemu: display: cirrus: OOB r/w access issues in bitblt routines

An out-of-bounds r/w access issue was found in QEMU's Cirrus CLGD 54xx VGA Emulator support. The vulnerability could occur while copying VGA data via various bitblt functions. A privileged user inside a guest could use this flaw to crash the QEMU process or, potentially, execute arbitrary code on...

Qemu: display: cirrus: potential arbitrary code execution via cirrus_bitblt_cputovideo

Quick emulator QEMU built with the Cirrus CLGD 54xx VGA Emulator support is vulnerable to an out-of-bounds access issue. The issue could occur while copying VGA data in cirrusbitbltcputovideo. A privileged user inside guest could use this flaw to crash the QEMU process OR potentially execute...

UBUNTU-CVE-2017-2583

The loadsegmentdescriptor implementation in arch/x86/kvm/emulate.c in the Linux kernel before 4.9.5 improperly emulates a "MOV SS, NULL selector" instruction, which allows guest OS users to cause a denial of service guest OS crash or gain guest OS privileges via a crafted application...

UBUNTU-CVE-2017-2615

Quick emulator QEMU built with the Cirrus CLGD 54xx VGA emulator support is vulnerable to an out-of-bounds access issue. It could occur while copying VGA data via bitblt copy in backward mode. A privileged user inside a guest could use this flaw to crash the QEMU process resulting in DoS or...

CVE-2016-10013

Xen through 4.8.x allows local 64-bit x86 HVM guest OS users to gain privileges by leveraging mishandling of SYSCALL singlestep during emulation...

openSUSE Security Update : xen (openSUSE-2017-4)

This updates xen to version 4.5.5 to fix the following issues : - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable...

Security update for xen (important)

This updates xen to version 4.5.5 to fix the following issues: - An unprivileged user in a guest could gain guest could escalate privilege to that of the guest kernel, if it had could invoke the instruction emulator. Only 64-bit x86 HVM guest were affected. Linux guest have not been vulnerable...

UBUNTU-CVE-2016-9916

Memory leak in hw/9pfs/9p-proxy.c in QEMU aka Quick Emulator allows local privileged guest OS users to cause a denial of service host memory consumption and possibly QEMU process crash by leveraging a missing cleanup operation in the proxy backend...

ESXi 5.5 < Build 3248547 Shared Folders (HGFS) Guest Privilege Escalation (VMSA-2016-0001) (remote check)

The remote VMware ESXi 5.5 host is prior to build 3248547. It is, therefore, affected by a guest privilege escalation vulnerability in the Shared Folders HGFS feature due to improper validation of user-supplied input. A local attacker can exploit this to corrupt memory, resulting in an elevation ...

VMware Workstation 11.x < 11.1.2 Shared Folders (HGFS) Guest Privilege Escalation (VMSA-2016-0001)

The version of VMware Workstation installed on the remote host is 11.x prior to 11.1.2. It is, therefore, affected by a guest privilege escalation vulnerability in the Shared Folders HGFS feature due to improper validation of user-supplied input. A local attacker can exploit this to corrupt memor...

VMware ESXi updates address important guest privilege escalation vulnerability (VMSA-2016-0001) - Remote Version Check

VMware ESXi updates address important guest privilege escalation vulnerability SPDX-FileCopyrightText: 2016 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...

VMware ESXi updates address important guest privilege escalation vulnerability (VMSA-2016-0001)

VMware ESXi updates address important guest privilege escalation vulnerability. SPDX-FileCopyrightText: 2016 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...

VMware Fusion 7.x < 7.1.2 Shared Folders (HGFS) Guest Privilege Escalation (VMSA-2016-0001)

The version of VMware Fusion installed on the remote Mac OS X host is 7.x prior to 7.1.2. It is, therefore, affected by a guest privilege escalation vulnerability in the Shared Folders HGFS feature due to improper validation of user-supplied input. A local attacker can exploit this to corrupt...

qemu/kvm: i8254: out-of-bounds memory access in pit_ioport_read function

An out-of-bounds memory access flaw, leading to memory corruption or possibly an information leak, was found in QEMU's pitioportread function. A privileged guest user in a QEMU guest, which had QEMU PIT emulation enabled, could potentially, in rare cases, use this flaw to execute arbitrary code o...

UBUNTU-CVE-2015-0239

The emsysenter function in arch/x86/kvm/emulate.c in the Linux kernel before 3.18.5, when the guest OS lacks SYSENTER MSR initialization, allows guest OS users to gain guest OS privileges or cause a denial of service guest OS crash by triggering use of a 16-bit code segment for emulation of a...

Qemu: information leakage when guest sets high resolution

An information leak flaw was found in the way QEMU's VGA emulator accessed frame buffer memory for high resolution displays. A privileged guest user could use this flaw to leak memory contents of the host to the guest by setting the display to use a high resolution in the guest...

VMware ESXi patches address a guest privilege escalation (VMSA-2014-0005)

VMware Workstation, Player, Fusion, and ESXi patches address a vulnerability in VMware Tools which could result in a privilege escalation on Microsoft Windows 8.1. SPDX-FileCopyrightText: 2014 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by...

VMSA-2014-0005:VMware Workstation, Player, Fusion, and ESXi patches address a guest privilege escalation

VMSA-2014-0005 VMware Workstation, Player, Fusion, and ESXi patches address a guest privilege escalation VMware Security Advisory VMware Security Advisory Advisory ID: VMSA-2014-0005 VMware Security Advisory Synopsis: VMware Workstation, Player, Fusion, and ESXi patches address a guest privilege...

VMSA-2013-0014 : VMware Workstation, Fusion, ESXi and ESX patches address a guest privilege escalation

a. VMware LGTOSYNC privilege escalation. VMware ESX, Workstation and Fusion contain a vulnerability in the handling of control code in lgtosync.sys. A local malicious user may exploit this vulnerability to manipulate the memory allocation. This could result in a privilege escalation on 32-bit Gue...