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CVE-2018-5683

Status Candidate

Overview

The vga_draw_text function in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds read and QEMU process crash) by leveraging improper memory address validation.

Related Files

Red Hat Security Advisory 2018-2162-01
Posted Jul 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2162-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Issues addressed include a bypass vulnerability.

tags | advisory, kernel, bypass
systems | linux, redhat
advisories | CVE-2017-13672, CVE-2018-3639, CVE-2018-5683, CVE-2018-7858
MD5 | 07c82da0e66fff158b7df439f93cc21c
Red Hat Security Advisory 2018-1104-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1104-01 - 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. The following packages have been upgraded to a later upstream version: qemu-kvm-rhev. Issues addressed include buffer overflow, denial of service, randomization, and use-after-free vulnerabilities.

tags | advisory, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2017-13672, CVE-2017-13673, CVE-2017-13711, CVE-2017-15118, CVE-2017-15119, CVE-2017-15124, CVE-2017-15268, CVE-2018-5683
MD5 | cb83aadca0e0b644bf1b0357f3ac4a0b
Red Hat Security Advisory 2018-0816-01
Posted Apr 11, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-0816-01 - Kernel-based Virtual Machine is a full virtualization solution for Linux on a variety of architectures. The qemu-kvm packages provide the user-space component for running virtual machines that use KVM. Issues addressed include randomization and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2017-13672, CVE-2017-13711, CVE-2017-15124, CVE-2017-15268, CVE-2018-5683
MD5 | c2e5a6128c48cc634131264bfbfa594d
Gentoo Linux Security Advisory 201804-08
Posted Apr 9, 2018
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201804-8 - Multiple vulnerabilities have been found in QEMU, the worst of which may allow an attacker to execute arbitrary code. Versions less than 2.11.1-r1 are affected.

tags | advisory, arbitrary, vulnerability
systems | linux, gentoo
advisories | CVE-2017-13672, CVE-2017-15124, CVE-2017-16845, CVE-2017-17381, CVE-2017-18030, CVE-2017-18043, CVE-2017-5715, CVE-2018-5683, CVE-2018-5748, CVE-2018-7550
MD5 | c969153354519977c6d88060ae101ad8
Ubuntu Security Notice USN-3575-2
Posted Mar 5, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3575-2 - USN-3575-1 fixed vulnerabilities in QEMU. The fix for CVE-2017-11334 caused a regression in Xen environments. This update removes the problematic fix pending further investigation. It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. Thomas Garnier discovered that QEMU incorrectly handled multiboot. An attacker could use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code on the host. In the default installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary, vulnerability
systems | linux, ubuntu
advisories | CVE-2017-11334, CVE-2017-13672, CVE-2017-14167, CVE-2017-15038, CVE-2017-15118, CVE-2017-15119, CVE-2017-15124, CVE-2017-15268, CVE-2017-15289, CVE-2017-16845, CVE-2017-17381, CVE-2017-18043, CVE-2018-5683
MD5 | 8897bd653068b95fd874eb483496b3a5
Ubuntu Security Notice USN-3575-1
Posted Feb 20, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3575-1 - It was discovered that QEMU incorrectly handled guest ram. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. David Buchanan discovered that QEMU incorrectly handled the VGA device. A privileged attacker inside the guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 17.10. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2017-11334, CVE-2017-13672, CVE-2017-14167, CVE-2017-15038, CVE-2017-15118, CVE-2017-15119, CVE-2017-15124, CVE-2017-15268, CVE-2017-15289, CVE-2017-16845, CVE-2017-17381, CVE-2017-18043, CVE-2018-5683
MD5 | bd2712c7c70f27164ec4d237cb2e9d33
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