Mozilla Firefox < 150.0

#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2026-30.
# The text itself is copyright (C) Mozilla Foundation.
##

include('compat.inc');

if (description)
{
  script_id(307899);
  script_version("1.7");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/05/08");

  script_cve_id(
    "CVE-2026-6746",
    "CVE-2026-6747",
    "CVE-2026-6748",
    "CVE-2026-6749",
    "CVE-2026-6750",
    "CVE-2026-6751",
    "CVE-2026-6752",
    "CVE-2026-6753",
    "CVE-2026-6754",
    "CVE-2026-6755",
    "CVE-2026-6756",
    "CVE-2026-6757",
    "CVE-2026-6758",
    "CVE-2026-6759",
    "CVE-2026-6760",
    "CVE-2026-6761",
    "CVE-2026-6762",
    "CVE-2026-6763",
    "CVE-2026-6764",
    "CVE-2026-6765",
    "CVE-2026-6766",
    "CVE-2026-6767",
    "CVE-2026-6768",
    "CVE-2026-6769",
    "CVE-2026-6770",
    "CVE-2026-6771",
    "CVE-2026-6772",
    "CVE-2026-6773",
    "CVE-2026-6774",
    "CVE-2026-6775",
    "CVE-2026-6776",
    "CVE-2026-6777",
    "CVE-2026-6778",
    "CVE-2026-6779",
    "CVE-2026-6780",
    "CVE-2026-6781",
    "CVE-2026-6782",
    "CVE-2026-6783",
    "CVE-2026-6784",
    "CVE-2026-6785",
    "CVE-2026-6786",
    "CVE-2026-7321",
    "CVE-2026-8091"
  );
  script_xref(name:"IAVA", value:"2026-A-0388-S");

  script_name(english:"Mozilla Firefox < 150.0");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote Windows host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox installed on the remote Windows host is prior to 150.0. It is, therefore, affected by multiple
vulnerabilities as referenced in the mfsa2026-30 advisory.

  - Incorrect boundary conditions, integer overflow in the Audio/Video: Playback component. This vulnerability
    was fixed in Firefox 150 and Thunderbird 150. (CVE-2026-6783)

  - Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 150, Firefox ESR
    115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. (CVE-2026-6746)

  - Use-after-free in the WebRTC component. This vulnerability was fixed in Firefox 150, Firefox ESR 140.10,
    Thunderbird 150, and Thunderbird 140.10. (CVE-2026-6747)

  - Uninitialized memory in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox
    150, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10. (CVE-2026-6748, CVE-2026-6751)

  - Information disclosure due to uninitialized memory in the Graphics: Canvas2D component. This vulnerability
    was fixed in Firefox 150, Firefox ESR 115.35, Firefox ESR 140.10, Thunderbird 150, and Thunderbird 140.10.
    (CVE-2026-6749)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2026-30/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox version 150.0 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-6783");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/04/21");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/04/21");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/21");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:mozilla:firefox");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("mozilla_org_installed.nasl");
  script_require_keys("installed_sw/Mozilla Firefox");

  exit(0);
}

include('vdf.inc');

# @tvdl-content-verify-only
var vuln_data = {
  "metadata": {
    "spec_version": "1.0"
  },
  "requires": [
    {
      "scope": "target",
      "match": {
        "os": "windows"
      }
    }
  ],
  "checks": [
    {
      "product": {
        "name": "Mozilla Firefox",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "fixed_version": "150.0"
        }
      ]
    }
  ]
};

var vdf_result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:vdf_result);