{
  "threat_severity" : "Moderate",
  "public_date" : "2018-02-27T00:00:00Z",
  "bugzilla" : {
    "description" : "QEMU: i386: multiboot OOB access while loading kernel image",
    "id" : "1549798",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1549798"
  },
  "cvss" : {
    "cvss_base_score" : "6.2",
    "cvss_scoring_vector" : "AV:L/AC:H/Au:N/C:C/I:C/A:C",
    "status" : "verified"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-787",
  "details" : [ "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.", "Quick Emulator (QEMU), compiled with the PC System Emulator with multiboot feature support, is vulnerable to an OOB r/w memory access issue. The issue could occur while loading a kernel image during the guest boot, if mh_load_end_addr address is greater than the mh_bss_end_addr address. A user or process could use this flaw to potentially achieve arbitrary code execution on a host." ],
  "acknowledgement" : "Red Hat would like to thank CERT-CC (Orange.com) and Cyrille Chatras (Orange.com) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2018-08-16T00:00:00Z",
    "advisory" : "RHSA-2018:2462",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "qemu-kvm-10:1.5.3-156.el7_5.5"
  }, {
    "product_name" : "Red Hat OpenStack Platform 10.0 (Newton)",
    "release_date" : "2018-05-22T00:00:00Z",
    "advisory" : "RHSA-2018:1644",
    "cpe" : "cpe:/a:redhat:openstack:10::el7",
    "package" : "qemu-kvm-rhev-10:2.10.0-21.el7_5.3"
  }, {
    "product_name" : "Red Hat OpenStack Platform 12.0 (Pike)",
    "release_date" : "2018-05-22T00:00:00Z",
    "advisory" : "RHSA-2018:1643",
    "cpe" : "cpe:/a:redhat:openstack:12::el7",
    "package" : "qemu-kvm-rhev-10:2.10.0-21.el7_5.3"
  }, {
    "product_name" : "Red Hat OpenStack Platform 8.0 (Liberty)",
    "release_date" : "2018-05-22T00:00:00Z",
    "advisory" : "RHSA-2018:1646",
    "cpe" : "cpe:/a:redhat:openstack:8::el7",
    "package" : "qemu-kvm-rhev-10:2.10.0-21.el7_5.3"
  }, {
    "product_name" : "Red Hat OpenStack Platform 9.0 (Mitaka)",
    "release_date" : "2018-05-22T00:00:00Z",
    "advisory" : "RHSA-2018:1645",
    "cpe" : "cpe:/a:redhat:openstack:9::el7",
    "package" : "qemu-kvm-rhev-10:2.10.0-21.el7_5.3"
  }, {
    "product_name" : "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7",
    "release_date" : "2018-05-10T00:00:00Z",
    "advisory" : "RHSA-2018:1369",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7::hypervisor",
    "package" : "qemu-kvm-rhev-10:2.10.0-21.el7_5.2"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "kvm",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Not affected",
    "package_name" : "xen",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  }, {
    "product_name" : "Red Hat Enterprise Linux 6",
    "fix_state" : "Not affected",
    "package_name" : "qemu-kvm",
    "cpe" : "cpe:/o:redhat:enterprise_linux:6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Not affected",
    "package_name" : "qemu-kvm-ma",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "fix_state" : "Not affected",
    "package_name" : "qemu-kvm",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8"
  }, {
    "product_name" : "Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)",
    "fix_state" : "Will not fix",
    "package_name" : "qemu-kvm-rhev",
    "cpe" : "cpe:/a:redhat:openstack:7"
  }, {
    "product_name" : "Red Hat OpenStack Platform 11 (Ocata)",
    "fix_state" : "Will not fix",
    "package_name" : "qemu-kvm-rhev",
    "cpe" : "cpe:/a:redhat:openstack:11"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2018-7550\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-7550" ],
  "name" : "CVE-2018-7550",
  "csaw" : false
}