{
  "fix": "thunderbird 1:78.11.0\u002Bbuild1-0ubuntu0.18.04.2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-1-78.11.0-build1-0ubuntu0.18.04.2",
  "summary": "thunderbird 1:78.11.0\u002Bbuild1-0ubuntu0.18.04.2, released June 1, 2021, fixes 20 CVEs in thunderbird. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "thunderbird 1:78.11.0\u002Bbuild1-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2021-06-01T17:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2021-29967, rated Critical",
  "supported": false,
  "cveCount": 20,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01756,
  "maxCvss": 8.8,
  "appliesTo": [
    {
      "product": "thunderbird",
      "productUrl": "https://patchblox.com/security/product/linux/thunderbird",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:78.11.0\u002Bbuild1-0ubuntu0.18.04.2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-29967",
      "url": "https://patchblox.com/security/cve/CVE-2021-29967",
      "title": "Firefox ESR and 3 others: Mozilla developers reported memory safety bugs present in Firefox 88 and Firefox ESR 78.11.",
      "priority": "Urgent",
      "severity": "CRITICAL",
      "cvss": 8.8,
      "epss": 0.01368,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23994",
      "url": "https://patchblox.com/security/cve/CVE-2021-23994",
      "title": "Firefox ESR and 2 others: A WebGL framebuffer was not initialized early enough, resulting in memory corruption and an out of bound\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01756,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23961",
      "url": "https://patchblox.com/security/cve/CVE-2021-23961",
      "title": "Firefox ESR and 1 other: Further techniques that built on the slipstream research combined with a malicious webpage could have\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.4,
      "epss": 0.01477,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23987",
      "url": "https://patchblox.com/security/cve/CVE-2021-23987",
      "title": "Firefox ESR and 2 others: Mozilla developers and community members reported memory safety bugs present in Firefox 86 and Firefox\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01416,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23999",
      "url": "https://patchblox.com/security/cve/CVE-2021-23999",
      "title": "Firefox ESR and 2 others: If a Blob URL was loaded through some unusual user interaction, it could have been loaded by the System\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01372,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29946",
      "url": "https://patchblox.com/security/cve/CVE-2021-29946",
      "title": "Firefox ESR and 2 others: Ports that were written as an integer overflow above the bounds of a 16-bit integer could have bypassed\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01303,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23995",
      "url": "https://patchblox.com/security/cve/CVE-2021-23995",
      "title": "Firefox ESR and 2 others: When Responsive Design Mode was enabled, it used references to objects that were previously freed.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01181,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23981",
      "url": "https://patchblox.com/security/cve/CVE-2021-23981",
      "title": "Firefox ESR and 2 others: A texture upload of a Pixel Buffer Object could have confused the WebGL code to skip binding the buffer\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.1,
      "epss": 0.01145,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-24002",
      "url": "https://patchblox.com/security/cve/CVE-2021-24002",
      "title": "Firefox ESR and 2 others: When a user clicked on an FTP URL containing encoded newline characters (%0A and %0D), the newlines would\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01125,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29949",
      "url": "https://patchblox.com/security/cve/CVE-2021-29949",
      "title": "Thunderbird: When loading the shared library that provides the OTR protocol implementation, Thunderbird will initially\u2026",
      "priority": "High",
      "severity": "Low",
      "cvss": 7.8,
      "epss": 0.00316,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29945",
      "url": "https://patchblox.com/security/cve/CVE-2021-29945",
      "title": "Firefox ESR and 2 others: The WebAssembly JIT could miscalculate the size of a return type, which could lead to a null read and\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01202,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23984",
      "url": "https://patchblox.com/security/cve/CVE-2021-23984",
      "title": "Firefox ESR and 2 others: A malicious extension could have opened a popup window lacking an address bar.",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.01113,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23991",
      "url": "https://patchblox.com/security/cve/CVE-2021-23991",
      "title": "Thunderbird: If a Thunderbird user has previously imported Alice\u0027s OpenPGP key, and Alice has extended the validity\u2026",
      "priority": "Routine",
      "severity": "MODERATE",
      "cvss": 6.8,
      "epss": 0.01035,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29957",
      "url": "https://patchblox.com/security/cve/CVE-2021-29957",
      "title": "Thunderbird and 1 other: If a MIME encoded email contains an OpenPGP inline signed or encrypted message part, but also contains\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.0094,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29956",
      "url": "https://patchblox.com/security/cve/CVE-2021-29956",
      "title": "Mozilla Thunderbird: OpenPGP secret keys that were imported using Thunderbird version 78.8.1 up to version 78.10.1 were stored\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 4.3,
      "epss": 0.0081,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23982",
      "url": "https://patchblox.com/security/cve/CVE-2021-23982",
      "title": "Firefox ESR and 2 others: Using techniques that built on the slipstream research, a malicious webpage could have scanned both an\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00743,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23998",
      "url": "https://patchblox.com/security/cve/CVE-2021-23998",
      "title": "Firefox ESR and 2 others: Through complicated navigations with new windows, an HTTP page could have inherited a secure lock icon\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00594,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23992",
      "url": "https://patchblox.com/security/cve/CVE-2021-23992",
      "title": "Thunderbird: Thunderbird did not check if the user ID associated with an OpenPGP key has a valid self signature.",
      "priority": "Routine",
      "severity": "MODERATE",
      "cvss": 4.3,
      "epss": 0.00478,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-23993",
      "url": "https://patchblox.com/security/cve/CVE-2021-23993",
      "title": "Thunderbird: An attacker may perform a DoS attack to prevent a user from sending encrypted email to a correspondent.",
      "priority": "Routine",
      "severity": "MODERATE",
      "cvss": 6.5,
      "epss": 0.00423,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29948",
      "url": "https://patchblox.com/security/cve/CVE-2021-29948",
      "title": "Thunderbird: Signatures are written to disk before and read during verification, which might be subject to a race\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 2.5,
      "epss": 0.00286,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-13T14:02:24Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}