{
  "threat_severity" : "Moderate",
  "public_date" : "2022-06-07T17:00:00Z",
  "bugzilla" : {
    "description" : "grub2: shim_lock verifier allows non-kernel files to be loaded",
    "id" : "2090857",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2090857"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.8",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-829",
  "details" : [ "The GRUB2's shim_lock verifier allows non-kernel files to be loaded on shim-powered secure boot systems. Allowing such files to be loaded may lead to unverified code and modules to be loaded in GRUB2 breaking the secure boot trust-chain.", "A flaw was found in grub2. The shim_lock verifier from grub2 allows non-kernel files to be loaded when secure boot is enabled, giving the possibility of unverified code or modules to be loaded when it should not be allowed." ],
  "acknowledgement" : "Red Hat would like to thank Julian Andres Klode (Canonical) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2022-06-16T00:00:00Z",
    "advisory" : "RHSA-2022:5095",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "grub2-1:2.02-123.el8_6.8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions",
    "release_date" : "2022-06-16T00:00:00Z",
    "advisory" : "RHSA-2022:5098",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.1",
    "package" : "grub2-1:2.02-87.el8_1.10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Extended Update Support",
    "release_date" : "2022-06-16T00:00:00Z",
    "advisory" : "RHSA-2022:5100",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.2",
    "package" : "grub2-1:2.02-87.el8_2.10"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Extended Update Support",
    "release_date" : "2022-06-16T00:00:00Z",
    "advisory" : "RHSA-2022:5096",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.4",
    "package" : "grub2-1:2.02-99.el8_4.9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2022-06-16T00:00:00Z",
    "advisory" : "RHSA-2022:5099",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "grub2-1:2.06-27.el9_0.7"
  } ],
  "package_state" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "fix_state" : "Out of support scope",
    "package_name" : "grub2",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2022-28735\nhttps://nvd.nist.gov/vuln/detail/CVE-2022-28735" ],
  "name" : "CVE-2022-28735",
  "csaw" : false
}