{
  "fix": "RHSA-2024:0003",
  "url": "https://patchblox.com/security/fix/linux/rhsa-2024-0003",
  "summary": "RHSA-2024:0003, released January 2, 2024, fixes 11 CVEs in thunderbird (version 0:115.6.0-1.el8_9). None of them is reported as exploited. Patch Radar priority: High.",
  "platform": "linux",
  "type": "advisory",
  "title": "thunderbird security update",
  "released": "2024-01-02T00:00:00Z",
  "priority": "High",
  "priorityTier": 3,
  "priorityReason": "Closes CVE-2023-6856, high severity",
  "supported": true,
  "cveCount": 11,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.2063,
  "maxCvss": 8.8,
  "vendorAdvisory": "https://access.redhat.com/errata/RHSA-2024:0003",
  "appliesTo": [
    {
      "product": "thunderbird",
      "productUrl": "https://patchblox.com/security/product/linux/thunderbird",
      "release": "RHEL 8",
      "fixedVersion": "0:115.6.0-1.el8_9",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2023-6856",
      "url": "https://patchblox.com/security/cve/CVE-2023-6856",
      "title": "Mozilla Firefox ESR and 5 others: The WebGL \u0060DrawElementsInstanced\u0060 method was susceptible to a heap buffer overflow when used on systems\u2026",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.2063,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6858",
      "url": "https://patchblox.com/security/cve/CVE-2023-6858",
      "title": "Mozilla Firefox ESR and 5 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01544,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6861",
      "url": "https://patchblox.com/security/cve/CVE-2023-6861",
      "title": "Mozilla Firefox ESR and 5 others: The \u0060nsWindow::PickerOpen(void)\u0060 method was susceptible to a heap buffer overflow when running in headless\u2026",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01411,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6864",
      "url": "https://patchblox.com/security/cve/CVE-2023-6864",
      "title": "Mozilla Firefox ESR and 5 others: Memory safety bugs present in Firefox 120, Firefox ESR 115.5, and Thunderbird 115.5.",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01194,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6859",
      "url": "https://patchblox.com/security/cve/CVE-2023-6859",
      "title": "Mozilla Firefox ESR and 5 others: A use-after-free condition affected TLS socket creation when under memory pressure.",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01092,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6863",
      "url": "https://patchblox.com/security/cve/CVE-2023-6863",
      "title": "Mozilla Firefox ESR and 5 others: The \u0060ShutdownObserver()\u0060 was susceptible to potentially undefined behavior due to its reliance on a dynamic\u2026",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01037,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6862",
      "url": "https://patchblox.com/security/cve/CVE-2023-6862",
      "title": "Mozilla Thunderbird and 1 other: A use-after-free was identified in the \u0060nsDNSService::Init\u0060.",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.00951,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-50761",
      "url": "https://patchblox.com/security/cve/CVE-2023-50761",
      "title": "Mozilla Thunderbird and 1 other: The signature of a digitally signed S/MIME email message may optionally specify the signature creation\u2026",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00633,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-50762",
      "url": "https://patchblox.com/security/cve/CVE-2023-50762",
      "title": "Mozilla Thunderbird and 1 other: When processing a PGP/MIME payload that contains digitally signed text, the first paragraph of the text\u2026",
      "priority": "High",
      "severity": "medium",
      "cvss": 7.5,
      "epss": 0.00633,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6860",
      "url": "https://patchblox.com/security/cve/CVE-2023-6860",
      "title": "Mozilla Firefox ESR and 5 others: The \u0060VideoBridge\u0060 allowed any content process to use textures produced by remote decoders.",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.5,
      "epss": 0.00958,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2023-6857",
      "url": "https://patchblox.com/security/cve/CVE-2023-6857",
      "title": "thunderbird: When resolving a symlink, a race may occur where the buffer passed to \u0060readlink\u0060 may actually be smaller than necessary",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.1,
      "epss": 0.00665,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}