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{"acknowledgement": "Red Hat would like to thank CERT-CC (Orange.com) and Cyrille Chatras (Orange.com) for reporting this issue.", "affected_release": [{"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 Enterprise Linux 7", "release_date": "2018-08-16T00:00:00Z"}, {"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 10.0 (Newton)", "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 12.0 (Pike)", "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 8.0 (Liberty)", "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 OpenStack Platform 9.0 (Mitaka)", "release_date": "2018-05-22T00:00:00Z"}, {"advisory": "RHSA-2018:1369", "cpe": "cpe:/o:redhat:enterprise_linux:7::hypervisor", "package": "qemu-kvm-rhev-10:2.10.0-21.el7_5.2", "product_name": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 7", "release_date": "2018-05-10T00:00:00Z"}], "bugzilla": {"description": "QEMU: i386: multiboot OOB access while loading kernel image", "id": "1549798", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1549798"}, "csaw": false, "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."], "name": "CVE-2018-7550", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kvm", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "xen", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "qemu-kvm-ma", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "qemu-kvm", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:openstack:7", "fix_state": "Will not fix", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat Enterprise Linux OpenStack Platform 7 (Kilo)"}, {"cpe": "cpe:/a:redhat:openstack:11", "fix_state": "Will not fix", "package_name": "qemu-kvm-rhev", "product_name": "Red Hat OpenStack Platform 11 (Ocata)"}], "public_date": "2018-02-27T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2018-7550\nhttps://nvd.nist.gov/vuln/detail/CVE-2018-7550"], "threat_severity": "Moderate"}