{
  "threat_severity" : "Moderate",
  "public_date" : "2020-10-20T00:00:00Z",
  "bugzilla" : {
    "description" : "xen: unsafe AMD IOMMU page table updates (XSA-347)",
    "id" : "1891087",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1891087"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
    "status" : "draft"
  },
  "cwe" : "CWE-567",
  "details" : [ "An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.", "A flaw was found in Xen in the AMD IOMMU page table updates. This flaw allows a malicious guest to cause a denial of service, host data corruption, or potential privilege escalation. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability." ],
  "statement" : "This flaw has been rated as having a security impact of Moderate, and is not currently planned to be addressed in future updates of Red Hat Enterprise Linux 5. Red Hat Enterprise Linux 5 is now in the Extended Life Phase of the support and maintenance life cycle. For additional information, refer to the Red Hat Enterprise Linux Life Cycle: https://access.redhat.com/support/policy/updates/errata/.",
  "acknowledgement" : "Red Hat would like to thank the Xen project for reporting this issue.",
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 5",
    "fix_state" : "Out of support scope",
    "package_name" : "kernel-xen",
    "cpe" : "cpe:/o:redhat:enterprise_linux:5"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-27670\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-27670\nhttps://xenbits.xen.org/xsa/advisory-347.html" ],
  "name" : "CVE-2020-27670",
  "mitigation" : {
    "value" : "Avoid passing through physical devices to untrusted guests.",
    "lang" : "en:us"
  },
  "csaw" : false
}