CVE-2023-40548

2024-01-2915:15:08

CWE-190

CWE-787

[email protected]

web.nvd.nist.gov

248

cve-2023-40548

buffer overflow

32-bit

shim

memory corruption

data integrity

nvd

7.4 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

7.8 High

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

28.1%

JSON

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 configurations

NVD

Node

redhatshimRange<15.8

redhatshimMatch15.8rc1

Node

fedoraprojectfedoraMatch39

CPENameOperatorVersion
redhat:shimredhat shimlt15.8

CPE	Name	Operator	Version
redhat:shim	redhat shim	lt	15.8

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-3.el7",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::server"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim-signed",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-1.el7",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::server"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-4.el8_9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:8::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_aus:8.2::baseos",
      "cpe:/o:redhat:rhel_e4s:8.2::baseos",
      "cpe:/o:redhat:rhel_tus:8.2::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_4",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_tus:8.4::baseos",
      "cpe:/o:redhat:rhel_e4s:8.4::baseos",
      "cpe:/o:redhat:rhel_aus:8.4::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8_6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_eus:8.6::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::crb",
      "cpe:/o:redhat:rhel_eus:8.8::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim-unsigned-x64",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::crb",
      "cpe:/o:redhat:rhel_eus:8.8::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-4.el9_3",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:9::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-3.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb",
      "cpe:/o:redhat:rhel_eus:9.0::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim-unsigned-aarch64",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb",
      "cpe:/o:redhat:rhel_eus:9.0::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim-unsigned-x64",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-2.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.0::appstream",
      "cpe:/a:redhat:rhel_eus:9.0::crb",
      "cpe:/o:redhat:rhel_eus:9.0::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "shim",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:15.8-3.el9_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:rhel_eus:9.2::baseos"
    ]
  }
]