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CVE-2018-7550

Status Candidate

Overview

The load_multiboot function in hw/i386/multiboot.c in Quick Emulator (aka QEMU) allows local guest OS users to execute arbitrary code on the QEMU host via a mh_load_end_addr value greater than mh_bss_end_addr, which triggers an out-of-bounds read or write memory access.

Related Files

Red Hat Security Advisory 2018-2462-01
Posted Aug 16, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-2462-01 - 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 buffer overflow vulnerability.

tags | advisory, overflow, kernel
systems | linux, redhat
advisories | CVE-2018-11806, CVE-2018-7550
SHA-256 | d888f6c463bf4ebb8752fc93231cfe8f9188d40f7b96eb4a62e34c7bc02c8685
Ubuntu Security Notice USN-3649-1
Posted May 16, 2018
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3649-1 - Cyrille Chatras discovered that QEMU incorrectly handled certain PS2 values during migration. An attacker could possibly use this issue to cause QEMU to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. Cyrille Chatras 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. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2017-16845, CVE-2018-7550, CVE-2018-7858
SHA-256 | 8d1fd8f5895618b90cefbd95f981ed47f49cbe3e49a20efeeb784bd6ffd48c02
Red Hat Security Advisory 2018-1369-01
Posted May 10, 2018
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2018-1369-01 - 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. Issues addressed include out-of-bounds access.

tags | advisory
systems | linux, redhat
advisories | CVE-2018-7550, CVE-2018-7858
SHA-256 | 90454141804f0e5a93c50eb232d7398ac9a54cec527c5f516ae4ead84a509bdf
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
SHA-256 | c0cac496b3a521f32ee1d0f652fd3355c954a2f4b374b783fe8e570dad67297a
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