{
  "threat_severity" : "Moderate",
  "public_date" : "2023-10-03T00:00:00Z",
  "bugzilla" : {
    "description" : "shim: Interger overflow leads to heap buffer overflow in verify_sbat_section on 32-bits systems",
    "id" : "2241782",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2241782"
  },
  "cvss3" : {
    "cvss3_base_score" : "7.4",
    "cvss3_scoring_vector" : "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
    "status" : "verified"
  },
  "cwe" : "(CWE-190|CWE-787)",
  "details" : [ "A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase.", "A buffer overflow was found in Shim in the 32-bit system. The overflow happens due to an addition operation involving a user-controlled value parsed from the PE binary being used by Shim. This value is further used for memory allocation operations, leading to a heap-based buffer overflow. This flaw causes memory corruption and can lead to a crash or data integrity issues during the boot phase." ],
  "affected_release" : [ {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2024-04-23T00:00:00Z",
    "advisory" : "RHSA-2024:1959",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "shim-0:15.8-3.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 7",
    "release_date" : "2024-04-23T00:00:00Z",
    "advisory" : "RHSA-2024:1959",
    "cpe" : "cpe:/o:redhat:enterprise_linux:7",
    "package" : "shim-signed-0:15.8-1.el7"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1902",
    "cpe" : "cpe:/o:redhat:enterprise_linux:8",
    "package" : "shim-0:15.8-4.el8_9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1834",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.2",
    "package" : "shim-0:15.8-2.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1834",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.2",
    "package" : "shim-0:15.8-2.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1834",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.2",
    "package" : "shim-0:15.8-2.el8_2"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1873",
    "cpe" : "cpe:/o:redhat:rhel_aus:8.4",
    "package" : "shim-0:15.8-2.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1873",
    "cpe" : "cpe:/o:redhat:rhel_tus:8.4",
    "package" : "shim-0:15.8-2.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1873",
    "cpe" : "cpe:/o:redhat:rhel_e4s:8.4",
    "package" : "shim-0:15.8-2.el8_4"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "release_date" : "2024-04-29T00:00:00Z",
    "advisory" : "RHSA-2024:2086",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.6",
    "package" : "shim-0:15.8-2.el8_6"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1883",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.8",
    "package" : "shim-0:15.8-2.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1883",
    "cpe" : "cpe:/o:redhat:rhel_eus:8.8",
    "package" : "shim-unsigned-x64-0:15.8-2.el8"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1903",
    "cpe" : "cpe:/o:redhat:enterprise_linux:9",
    "package" : "shim-0:15.8-4.el9_3"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1835",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0",
    "package" : "shim-0:15.8-3.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1835",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0",
    "package" : "shim-unsigned-aarch64-0:15.8-2.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "release_date" : "2024-04-16T00:00:00Z",
    "advisory" : "RHSA-2024:1835",
    "cpe" : "cpe:/a:redhat:rhel_eus:9.0",
    "package" : "shim-unsigned-x64-0:15.8-2.el9"
  }, {
    "product_name" : "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "release_date" : "2024-04-18T00:00:00Z",
    "advisory" : "RHSA-2024:1876",
    "cpe" : "cpe:/o:redhat:rhel_eus:9.2",
    "package" : "shim-0:15.8-3.el9_2"
  } ],
  "references" : [ "https://www.cve.org/CVERecord?id=CVE-2023-40548\nhttps://nvd.nist.gov/vuln/detail/CVE-2023-40548" ],
  "name" : "CVE-2023-40548",
  "mitigation" : {
    "value" : "There's no available mitigation for this issue.",
    "lang" : "en:us"
  },
  "csaw" : false
}