{
  "fix": "thunderbird-gnome-support 1:91.5.0\u002Bbuild1-0ubuntu0.18.04.1",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-thunderbird-gnome-support-1-91.5.0-build1-0ubuntu0.18.04.1",
  "summary": "thunderbird-gnome-support 1:91.5.0\u002Bbuild1-0ubuntu0.18.04.1, released February 16, 2023, fixes 45 CVEs in thunderbird-gnome-support. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "thunderbird-gnome-support 1:91.5.0\u002Bbuild1-0ubuntu0.18.04.1 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2023-02-16T14:15:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2021-4129, rated Critical",
  "supported": false,
  "cveCount": 45,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.04116,
  "maxCvss": 10,
  "appliesTo": [
    {
      "product": "thunderbird-gnome-support",
      "productUrl": "https://patchblox.com/security/product/linux/thunderbird-gnome-support",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "1:91.5.0\u002Bbuild1-0ubuntu0.18.04.1",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2021-4129",
      "url": "https://patchblox.com/security/cve/CVE-2021-4129",
      "title": "Mozilla Firefox ESR and 3 others: Out-of-bounds Write",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.8,
      "epss": 0.01062,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43529",
      "url": "https://patchblox.com/security/cve/CVE-2021-43529",
      "title": "Mozilla Thunderbird and 1 other: Out-of-bounds Write",
      "priority": "Urgent",
      "severity": "critical",
      "cvss": 9.8,
      "epss": 0.00469,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38503",
      "url": "https://patchblox.com/security/cve/CVE-2021-38503",
      "title": "Mozilla Firefox ESR and 3 others: The iframe sandbox rules were not correctly applied to XSLT stylesheets, allowing an iframe to bypass\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 10,
      "epss": 0.04116,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43537",
      "url": "https://patchblox.com/security/cve/CVE-2021-43537",
      "title": "Mozilla Firefox ESR and 3 others: An incorrect type conversion of sizes from 64bit to 32bit integers allowed an attacker to corrupt memory\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.02087,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-44538",
      "url": "https://patchblox.com/security/cve/CVE-2021-44538",
      "title": "thunderbird: The olm_session_describe function in Matrix libolm before 3.2.7 isvulnerable to a buffer overflow",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.8,
      "epss": 0.02001,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43542",
      "url": "https://patchblox.com/security/cve/CVE-2021-43542",
      "title": "Mozilla Firefox ESR and 3 others: Using XMLHttpRequest, an attacker could have identified installed applications by probing error messages\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01834,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38504",
      "url": "https://patchblox.com/security/cve/CVE-2021-38504",
      "title": "Mozilla Firefox ESR and 3 others: When interacting with an HTML input element\u0027s file picker dialog with webkitdirectory set, a use-after-free\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01766,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43536",
      "url": "https://patchblox.com/security/cve/CVE-2021-43536",
      "title": "Mozilla Firefox ESR and 3 others: Under certain circumstances, asynchronous functions could have caused a navigation to fail but expose\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.0174,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43539",
      "url": "https://patchblox.com/security/cve/CVE-2021-43539",
      "title": "Mozilla Firefox ESR and 3 others: Failure to correctly record the location of live pointers across wasm instance calls resulted in a GC\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01734,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43545",
      "url": "https://patchblox.com/security/cve/CVE-2021-43545",
      "title": "Mozilla Firefox ESR and 3 others: Using the Location API in a loop could have caused severe application hangs and crashes.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01717,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38496",
      "url": "https://patchblox.com/security/cve/CVE-2021-38496",
      "title": "Mozilla Firefox ESR and 3 others: During operations on MessageTasks, a task may have been removed while it was still scheduled, resulting\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01659,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43541",
      "url": "https://patchblox.com/security/cve/CVE-2021-43541",
      "title": "Mozilla Firefox ESR and 3 others: When invoking protocol handlers for external protocols, a supplied parameter URL containing spaces was\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01628,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38506",
      "url": "https://patchblox.com/security/cve/CVE-2021-38506",
      "title": "Mozilla Firefox ESR and 3 others: Through a series of navigations, Firefox could have entered fullscreen mode without notification or warning\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.5,
      "epss": 0.01507,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43546",
      "url": "https://patchblox.com/security/cve/CVE-2021-43546",
      "title": "Mozilla Firefox ESR and 3 others: It was possible to recreate previous cursor spoofing attacks against users with a zoomed native cursor.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01505,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38498",
      "url": "https://patchblox.com/security/cve/CVE-2021-38498",
      "title": "Mozilla Firefox ESR and 3 others: During process shutdown, a document could have caused a use-after-free of a languages service object,\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.5,
      "epss": 0.01467,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43543",
      "url": "https://patchblox.com/security/cve/CVE-2021-43543",
      "title": "Mozilla Firefox ESR and 3 others: Documents loaded with the CSP sandbox directive could have escaped the sandbox\u0027s script restriction by\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01454,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-4140",
      "url": "https://patchblox.com/security/cve/CVE-2021-4140",
      "title": "Mozilla Firefox ESR and 3 others: XML Injection (aka Blind XPath Injection)",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 10,
      "epss": 0.01405,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43528",
      "url": "https://patchblox.com/security/cve/CVE-2021-43528",
      "title": "Mozilla Thunderbird and 1 other: Thunderbird unexpectedly enabled JavaScript in the composition area.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01309,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38500",
      "url": "https://patchblox.com/security/cve/CVE-2021-38500",
      "title": "Mozilla Firefox ESR and 3 others: Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01273,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43534",
      "url": "https://patchblox.com/security/cve/CVE-2021-43534",
      "title": "Mozilla Firefox ESR and 3 others: Mozilla developers and community members reported memory safety bugs present in Firefox 93 and Firefox\u2026",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01248,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43538",
      "url": "https://patchblox.com/security/cve/CVE-2021-43538",
      "title": "Mozilla Firefox ESR and 3 others: By misusing a race in our notification code, an attacker could have forcefully hidden the notification\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.8,
      "epss": 0.01196,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-43535",
      "url": "https://patchblox.com/security/cve/CVE-2021-43535",
      "title": "Mozilla Firefox ESR and 3 others: A use-after-free could have occured when an HTTP2 session object was released on a different thread,\u2026",
      "priority": "High",
      "severity": "high",
      "cvss": 8.8,
      "epss": 0.01147,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38495",
      "url": "https://patchblox.com/security/cve/CVE-2021-38495",
      "title": "Mozilla Thunderbird and 1 other: Mozilla developers reported memory safety bugs present in Thunderbird 78.13.0.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01107,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38502",
      "url": "https://patchblox.com/security/cve/CVE-2021-38502",
      "title": "Mozilla Thunderbird and 1 other: Thunderbird ignored the configuration to require STARTTLS security for an SMTP connection.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.5,
      "epss": 0.01101,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38501",
      "url": "https://patchblox.com/security/cve/CVE-2021-38501",
      "title": "Mozilla Firefox ESR and 3 others: Mozilla developers reported memory safety bugs present in Firefox 92 and Firefox ESR 91.1.",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 8.8,
      "epss": 0.01048,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22738",
      "url": "https://patchblox.com/security/cve/CVE-2022-22738",
      "title": "Mozilla Firefox ESR and 3 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.01035,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29981",
      "url": "https://patchblox.com/security/cve/CVE-2021-29981",
      "title": "Firefox ESR and 3 others: An issue present in lowering/register allocation could have led to obscure but deterministic register\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.8,
      "epss": 0.01012,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22740",
      "url": "https://patchblox.com/security/cve/CVE-2022-22740",
      "title": "Mozilla Firefox ESR and 3 others: Use After Free",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.01006,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22751",
      "url": "https://patchblox.com/security/cve/CVE-2022-22751",
      "title": "Mozilla Firefox ESR and 3 others: Out-of-bounds Write",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.6,
      "epss": 0.00919,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29991",
      "url": "https://patchblox.com/security/cve/CVE-2021-29991",
      "title": "Firefox ESR and 3 others: Firefox incorrectly accepted a newline in a HTTP/3 header, interpretting it as two separate headers.",
      "priority": "High",
      "severity": "Medium",
      "cvss": 8.1,
      "epss": 0.0091,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22742",
      "url": "https://patchblox.com/security/cve/CVE-2022-22742",
      "title": "Mozilla Firefox ESR and 3 others: Out-of-bounds Read",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.00849,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38507",
      "url": "https://patchblox.com/security/cve/CVE-2021-38507",
      "title": "Mozilla Firefox ESR and 3 others: The Opportunistic Encryption feature of HTTP2 (RFC 8164) allows a connection to be transparently upgraded\u2026",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 7.5,
      "epss": 0.00832,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22737",
      "url": "https://patchblox.com/security/cve/CVE-2022-22737",
      "title": "Mozilla Firefox ESR and 3 others: Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.0078,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22748",
      "url": "https://patchblox.com/security/cve/CVE-2022-22748",
      "title": "Mozilla Firefox ESR and 3 others: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.00767,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22739",
      "url": "https://patchblox.com/security/cve/CVE-2022-22739",
      "title": "Mozilla Firefox ESR and 3 others: Malicious websites could have tricked users into accepting launching a program to handle an external\u2026",
      "priority": "High",
      "severity": "Low",
      "cvss": 9.6,
      "epss": 0.00712,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22741",
      "url": "https://patchblox.com/security/cve/CVE-2022-22741",
      "title": "Mozilla Firefox ESR and 3 others: When resizing a popup while requesting fullscreen access, the popup would have become unable to leave\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.00695,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22743",
      "url": "https://patchblox.com/security/cve/CVE-2022-22743",
      "title": "Mozilla Firefox ESR and 3 others: When navigating from inside an iframe while requesting fullscreen access, an attacker-controlled tab\u2026",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.00685,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22745",
      "url": "https://patchblox.com/security/cve/CVE-2022-22745",
      "title": "Mozilla Firefox ESR and 3 others: Exposure of Sensitive Information to an Unauthorized Actor",
      "priority": "High",
      "severity": "Medium",
      "cvss": 9.6,
      "epss": 0.00683,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2022-22747",
      "url": "https://patchblox.com/security/cve/CVE-2022-22747",
      "title": "Mozilla Firefox ESR and 3 others: Improper Certificate Validation",
      "priority": "High",
      "severity": "IMPORTANT",
      "cvss": 9.6,
      "epss": 0.00677,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38509",
      "url": "https://patchblox.com/security/cve/CVE-2021-38509",
      "title": "Mozilla Firefox ESR and 3 others: Due to an unusual sequence of attacker-controlled events, a Javascript alert() dialog with arbitrary\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01759,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38508",
      "url": "https://patchblox.com/security/cve/CVE-2021-38508",
      "title": "Mozilla Firefox ESR and 3 others: By displaying a form validity message in the correct location at the same time as a permission prompt\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.1,
      "epss": 0.01642,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29982",
      "url": "https://patchblox.com/security/cve/CVE-2021-29982",
      "title": "Firefox ESR and 3 others: Due to incorrect JIT optimization, we incorrectly interpreted data from the wrong type of object, resulting\u2026",
      "priority": "Routine",
      "severity": "Low",
      "cvss": 6.5,
      "epss": 0.01124,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-29987",
      "url": "https://patchblox.com/security/cve/CVE-2021-29987",
      "title": "firefox: After requesting multiple permissions, and closing the first permission panel, subsequent permission panels will be d...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.00945,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-38497",
      "url": "https://patchblox.com/security/cve/CVE-2021-38497",
      "title": "Mozilla Firefox ESR and 3 others: Through use of reportValidity() and window.open(), a plain-text validation message could have been overlaid\u2026",
      "priority": "Routine",
      "severity": "IMPORTANT",
      "cvss": 6.5,
      "epss": 0.00591,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2021-4126",
      "url": "https://patchblox.com/security/cve/CVE-2021-4126",
      "title": "Mozilla Thunderbird and 1 other: When receiving an OpenPGP/MIME signed email message that contains an additional outer MIME message layer,\u2026",
      "priority": "Routine",
      "severity": "medium",
      "cvss": 6.5,
      "epss": 0.00461,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-13T20:04:13Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}