{
  "threat_severity" : "Moderate",
  "public_date" : "2020-07-29T17:00:00Z",
  "bugzilla" : {
    "description" : "grub2: Integer overflow in grub_squash_read_symlink may lead to heap-based buffer overflow",
    "id" : "1852022",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=1852022"
  },
  "cvss3" : {
    "cvss3_base_score" : "6.7",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "CWE-190->CWE-122",
  "details" : [ "There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data.", "A flaw was found in grub2. When handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size, the name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacker controlled data. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability." ],
  "acknowledgement" : "Red Hat would like to thank Chris Coulson (Ubuntu Security Team) for reporting this issue.",
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3217",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "fwupdate-0:12-6.el7_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3217",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "grub2-1:2.02-0.86.el7_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3217",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "shim-0:15-7.el7_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3217",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "shim-signed-0:15-7.el7_8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.2 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3273",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.2",
    "package" : "grub2-1:2.02-0.86.el7_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.2 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3273",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.2",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.2 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3273",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.2",
    "package" : "shim-signed-0:15-8.el7_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "grub2-1:2.02-0.86.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.3",
    "package" : "shim-signed-0:15-8.el7_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.3",
    "package" : "grub2-1:2.02-0.86.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.3",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.3",
    "package" : "shim-signed-0:15-8.el7_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.3",
    "package" : "grub2-1:2.02-0.86.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.3",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.3 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3276",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.3",
    "package" : "shim-signed-0:15-8.el7_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "fwupdate-0:9-10.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "grub2-1:2.02-0.86.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Advanced Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_aus:7.4",
    "package" : "shim-signed-0:15-8.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.4",
    "package" : "fwupdate-0:9-10.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.4",
    "package" : "grub2-1:2.02-0.86.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.4",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Telco Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_tus:7.4",
    "package" : "shim-signed-0:15-8.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.4",
    "package" : "fwupdate-0:9-10.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.4",
    "package" : "grub2-1:2.02-0.86.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.4",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.4 Update Services for SAP Solutions",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3275",
    "cpe" : "cpe:/o:redhat:rhel_e4s:7.4",
    "package" : "shim-signed-0:15-8.el7_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3271",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.6",
    "package" : "fwupdate-0:12-6.el7_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3271",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.6",
    "package" : "grub2-1:2.02-0.86.el7_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3271",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.6",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.6 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3271",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.6",
    "package" : "shim-signed-0:15-8.el7_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3274",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.7",
    "package" : "fwupdate-0:12-6.el7_7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3274",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.7",
    "package" : "grub2-1:2.02-0.86.el7_7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3274",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.7",
    "package" : "shim-0:15-8.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7.7 Extended Update Support",
    "release_date" : "2020-08-03T00:00:00Z",
    "advisory" : "RHSA-2020:3274",
    "cpe" : "cpe:/o:redhat:rhel_eus:7.7",
    "package" : "shim-signed-0:15-8.el7_7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3216",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "fwupd-0:1.1.4-7.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3216",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "grub2-1:2.02-87.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3216",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "shim-0:15-14.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3216",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "shim-unsigned-x64-0:15-7.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3227",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.0",
    "package" : "fwupd-0:1.1.4-2.el8_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3227",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.0",
    "package" : "grub2-1:2.02-87.el8_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3227",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.0",
    "package" : "shim-0:15-14.el8_0"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3223",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "fwupd-0:1.1.4-2.el8_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3223",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "grub2-1:2.02-87.el8_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3223",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "shim-0:15-14.el8_1"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.1 Extended Update Support",
    "release_date" : "2020-07-29T00:00:00Z",
    "advisory" : "RHSA-2020:3223",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.1",
    "package" : "shim-unsigned-x64-0:15-7.el8"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2020-14309\nhttps://nvd.nist.gov/vuln/detail/CVE-2020-14309" ],
  "name" : "CVE-2020-14309",
  "csaw" : false
}