{
  "fix": "firefox 63.0\u002Bbuild2-0ubuntu0.18.04.2",
  "url": "https://patchblox.com/security/fix/linux/ubuntu-bionic-firefox-63.0-build2-0ubuntu0.18.04.2",
  "summary": "firefox 63.0\u002Bbuild2-0ubuntu0.18.04.2, released October 23, 2018, fixes 12 CVEs in firefox. None of them is reported as exploited. Patch Radar priority: Routine. The product is no longer supported.",
  "platform": "linux",
  "type": "package",
  "title": "firefox 63.0\u002Bbuild2-0ubuntu0.18.04.2 for Ubuntu 18.04.6 LTS (bionic)",
  "released": "2018-10-23T17:00:00Z",
  "priority": "Routine",
  "priorityTier": 4,
  "priorityReason": "Closes 12 CVEs, none high severity",
  "supported": false,
  "cveCount": 12,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.03924,
  "appliesTo": [
    {
      "product": "firefox",
      "productUrl": "https://patchblox.com/security/product/linux/firefox",
      "release": "Ubuntu 18.04.6 LTS (bionic)",
      "fixedVersion": "63.0\u002Bbuild2-0ubuntu0.18.04.2",
      "supported": true
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2018-12393",
      "url": "https://patchblox.com/security/cve/CVE-2018-12393",
      "title": "firefox: A potential vulnerability was found in 32-bit builds where an integer overflow during the conversion of scripts to an...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.03924,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12392",
      "url": "https://patchblox.com/security/cve/CVE-2018-12392",
      "title": "firefox: When manipulating user events in nested loops while opening a document through script, it is possible to trigger a po...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.03425,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12390",
      "url": "https://patchblox.com/security/cve/CVE-2018-12390",
      "title": "firefox: Mozilla developers and community members reported memory safety bugs present in Firefox 62 and Firefox ESR 60.2",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.03207,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12395",
      "url": "https://patchblox.com/security/cve/CVE-2018-12395",
      "title": "firefox: By rewriting the Host: request headers using the webRequest API, a WebExtension can bypass domain restrictions throug...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.02851,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12401",
      "url": "https://patchblox.com/security/cve/CVE-2018-12401",
      "title": "firefox: Some special resource URIs will cause a non-exploitable crash if loaded with optional parameters following a \u0027?\u0027 in t...",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.02508,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12396",
      "url": "https://patchblox.com/security/cve/CVE-2018-12396",
      "title": "firefox-testsuite: A vulnerability where a WebExtension can run content scripts in disallowed contexts following navigation or other events",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.02273,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12403",
      "url": "https://patchblox.com/security/cve/CVE-2018-12403",
      "title": "firefox: If a site is loaded over a HTTPS connection but loads a favicon resource over HTTP, the mixed content warning is not...",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.02055,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12398",
      "url": "https://patchblox.com/security/cve/CVE-2018-12398",
      "title": "firefox: By using the reflected URL in some special resource URIs, such as chrome:, it is possible to inject stylesheets and b...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01617,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12399",
      "url": "https://patchblox.com/security/cve/CVE-2018-12399",
      "title": "firefox: When a new protocol handler is registered, the API accepts a title argument which can be used to mislead users about...",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.01565,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12402",
      "url": "https://patchblox.com/security/cve/CVE-2018-12402",
      "title": "firefox: The internal WebBrowserPersist code does not use correct origin context for a resource being saved",
      "priority": "Routine",
      "severity": "Low",
      "epss": 0.01519,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12388",
      "url": "https://patchblox.com/security/cve/CVE-2018-12388",
      "title": "firefox: Mozilla developers and community members reported memory safety bugs present in Firefox 62",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.01431,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2018-12397",
      "url": "https://patchblox.com/security/cve/CVE-2018-12397",
      "title": "firefox: A WebExtension can request access to local files without the warning prompt stating that the extension will \u0022Access y...",
      "priority": "Routine",
      "severity": "Medium",
      "epss": 0.00371,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-12T01:51:14Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}