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CVE-2017-2633

Status Candidate

Overview

An out-of-bounds memory access issue was found in Quick Emulator (QEMU) before 1.7.2 in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.

Related Files

Red Hat Security Advisory 2017-1856-01
Posted Aug 1, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1856-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix: An out-of-bounds memory access issue was found in Quick Emulator in the VNC display driver. This flaw could occur while refreshing the VNC display surface area in the 'vnc_refresh_server_surface'. A user inside a guest could use this flaw to crash the QEMU process.

tags | advisory, kernel
systems | linux, redhat
advisories | CVE-2016-4020, CVE-2017-2633, CVE-2017-5898
SHA-256 | 92a1e5eb7e2832421e19e24e6aa230b81a1e335730df1aa162dcfec33ebcf9f1
Red Hat Security Advisory 2017-1441-01
Posted Jun 14, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1441-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: 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 the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
SHA-256 | 3ad4644b24e8b2f79fa8d2b135c9f45efcda5f214c0ef67d158a2e9a2e3c9fdf
Red Hat Security Advisory 2017-1206-01
Posted May 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1206-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm package provides the user-space component for running virtual machines that use KVM. Security Fix: 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 the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary, kernel
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
SHA-256 | b02b7173440f427f717685ada5dc95c4b660786f94efef1453ce77af5eac1c51
Red Hat Security Advisory 2017-1205-01
Posted May 10, 2017
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2017-1205-01 - KVM is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines that use KVM in environments managed by Red Hat products. Security Fix: 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 the QEMU process or, potentially, execute arbitrary code on the host with privileges of the QEMU process.

tags | advisory, overflow, arbitrary
systems | linux, redhat
advisories | CVE-2016-9603, CVE-2017-2633, CVE-2017-7718, CVE-2017-7980
SHA-256 | 402bb60cbd271f30307359df59a64ca74bc2ac977bcc7313118c66cbb1746a97
Ubuntu Security Notice USN-3261-1
Posted Apr 20, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3261-1 - Zhenhao Hong discovered that QEMU incorrectly handled the Virtio GPU device. An attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 16.10. Li Qiang discovered that QEMU incorrectly handled the 6300esb watchdog. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2016-10028, CVE-2016-10029, CVE-2016-10155, CVE-2016-7907, CVE-2016-8667, CVE-2016-8669, CVE-2016-9381, CVE-2016-9602, CVE-2016-9603, CVE-2016-9776, CVE-2016-9845, CVE-2016-9846, CVE-2016-9907, CVE-2016-9908, CVE-2016-9911, CVE-2016-9912, CVE-2016-9913, CVE-2016-9914, CVE-2016-9915, CVE-2016-9916, CVE-2016-9921, CVE-2016-9922, CVE-2017-2615, CVE-2017-2620, CVE-2017-2633, CVE-2017-5525, CVE-2017-5526, CVE-2017-5552
SHA-256 | 59e4c93cf0110c0dfbf04c8437a5671ce02bce5e5d84b925280c13d41fc38a3b
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