{
  "fix": "ELSA-2024-1903",
  "url": "https://patchblox.com/security/fix/linux/elsa-2024-1903",
  "summary": "ELSA-2024-1903, released April 22, 2024, fixes 6 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.",
  "platform": "linux",
  "type": "advisory",
  "title": "Security update for 2 packages",
  "released": "2024-04-22T00:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2023-40547, rated Critical",
  "supported": true,
  "cveCount": 6,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.05417,
  "maxCvss": 8.3,
  "vendorAdvisory": "https://linux.oracle.com/errata/ELSA-2024-1903.html",
  "appliesTo": [
    {
      "product": "shim-aa64",
      "productUrl": "https://patchblox.com/security/product/linux/shim-aa64",
      "release": "ol 9",
      "fixedVersion": "0:15.8-1.0.3.el9",
      "supported": true
    },
    {
      "product": "shim-x64",
      "productUrl": "https://patchblox.com/security/product/linux/shim-x64",
      "release": "ol 9",
      "fixedVersion": "0:15.8-1.0.3.el9",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2023-40547",
      "url": "https://patchblox.com/security/cve/CVE-2023-40547",
      "title": "Redhat: CVE-2023-40547 Shim - RCE in HTTP boot support may lead to secure boot bypass",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 8.3,
      "epss": 0.05417,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-40548",
      "url": "https://patchblox.com/security/cve/CVE-2023-40548",
      "title": "shim: A buffer overflow was found in Shim in the 32-bit system",
      "priority": "High",
      "severity": "high",
      "cvss": 7.4,
      "epss": 0.00436,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-40546",
      "url": "https://patchblox.com/security/cve/CVE-2023-40546",
      "title": "shim: A flaw was found in Shim when an error happened while creating a new ESL variable",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.2,
      "epss": 0.00438,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-40549",
      "url": "https://patchblox.com/security/cve/CVE-2023-40549",
      "title": "shim: An out-of-bounds read flaw was found in Shim due to the lack of properboundary verification during the load of a PE b...",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 6.2,
      "epss": 0.00412,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-40550",
      "url": "https://patchblox.com/security/cve/CVE-2023-40550",
      "title": "shim: An out-of-bounds read flaw was found in Shim when it tried to validate theSBAT information",
      "priority": "Routine",
      "severity": "Medium",
      "cvss": 5.5,
      "epss": 0.00397,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-40551",
      "url": "https://patchblox.com/security/cve/CVE-2023-40551",
      "title": "shim: A flaw was found in the MZ binary format in Shim",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 5.1,
      "epss": 0.00397,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T12:40:37Z"
}