« Volver al listado

CVE-2023-40546

Estado: ModificadaMedia (5.5)—

A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

Fedoraproject — FedoraRedhat — Enterprise LinuxRedhat — Shim

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2023-40546",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-40546",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2024-01-29T19:54:29.372942Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secalert@redhat.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.2,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.5
      },
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 5.5,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secalert@redhat.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7::client",
            "cpe:/o:redhat:enterprise_linux:7::server",
            "cpe:/o:redhat:enterprise_linux:7::workstation"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 7",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-3.el7",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:7::client",
            "cpe:/o:redhat:enterprise_linux:7::server",
            "cpe:/o:redhat:enterprise_linux:7::workstation"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 7",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-1.el7",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim-signed",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:8::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-4.el8_9",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_tus:8.2::baseos",
            "cpe:/o:redhat:rhel_aus:8.2::baseos",
            "cpe:/o:redhat:rhel_e4s:8.2::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_2",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_tus:8.2::baseos",
            "cpe:/o:redhat:rhel_aus:8.2::baseos",
            "cpe:/o:redhat:rhel_e4s:8.2::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_2",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_tus:8.2::baseos",
            "cpe:/o:redhat:rhel_aus:8.2::baseos",
            "cpe:/o:redhat:rhel_e4s:8.2::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_2",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "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 Advanced Mission Critical Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_4",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "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",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_4",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "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",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_4",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:8.6::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8_6",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:8.8::baseos",
            "cpe:/a:redhat:rhel_eus:8.8::crb"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:8.8::baseos",
            "cpe:/a:redhat:rhel_eus:8.8::crb"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el8",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim-unsigned-x64",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:enterprise_linux:9::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-4.el9_3",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:9.0::baseos",
            "cpe:/a:redhat:rhel_eus:9.0::crb",
            "cpe:/a:redhat:rhel_eus:9.0::appstream"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-3.el9",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:9.0::baseos",
            "cpe:/a:redhat:rhel_eus:9.0::crb",
            "cpe:/a:redhat:rhel_eus:9.0::appstream"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el9",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim-unsigned-aarch64",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:9.0::baseos",
            "cpe:/a:redhat:rhel_eus:9.0::crb",
            "cpe:/a:redhat:rhel_eus:9.0::appstream"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-2.el9",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim-unsigned-x64",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        },
        {
          "cpes": [
            "cpe:/o:redhat:rhel_eus:9.2::baseos"
          ],
          "vendor": "Red Hat",
          "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
          "versions": [
            {
              "status": "unaffected",
              "version": "0:15.8-3.el9_2",
              "lessThan": "*",
              "versionType": "rpm"
            }
          ],
          "packageName": "shim",
          "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2024-01-29T17:15:08.347",
  "references": [
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1834",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1835",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1873",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1876",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1883",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1902",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1903",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1959",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:2086",
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2023-40546",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2241796",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "secalert@redhat.com"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1834",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1835",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1873",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1876",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1883",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1902",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1903",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:1959",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/errata/RHSA-2024:2086",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://access.redhat.com/security/cve/CVE-2023-40546",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2241796",
      "tags": [
        "Issue Tracking",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
    {
      "url": "https://lists.debian.org/debian-lts-announce/2024/05/msg00009.html",
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secalert@redhat.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    },
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-476"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Shim when an error happened while creating a new ESL variable. If Shim fails to create the new variable, it tries to print an error message to the user; however, the number of parameters used by the logging function doesn't match the format string used by it, leading to a crash under certain circumstances."
    },
    {
      "lang": "es",
      "value": "Se encontró un fallo en Shim cuando ocurrió un error al crear una nueva variable ESL. Si Shim no puede crear la nueva variable, intenta imprimir un mensaje de error para el usuario; sin embargo, la cantidad de parámetros utilizados por la función de registro no coincide con la cadena de formato utilizada, lo que provoca un bloqueo en determinadas circunstancias."
    }
  ],
  "lastModified": "2026-06-17T06:18:24.177",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:shim:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "01639865-3664-4034-BCFB-F4E09AF37F28",
              "versionEndExcluding": "15.8"
            }
          ],
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:39:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "B8EDB836-4E6A-4B71-B9B2-AA3E03E0F646"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943"
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secalert@redhat.com"
}