Mozilla Firefox ESR < 115.35

#%NASL_MIN_LEVEL 80900
## 
# (C) Tenable, Inc.
#                                  
# The descriptive text and package checks in this plugin were
# extracted from Mozilla Foundation Security Advisory mfsa2026-31.
# The text itself is copyright (C) Mozilla Foundation.
## 

include('compat.inc');

if (description)
{
  script_id(307896);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/04/21");

  script_cve_id(
    "CVE-2026-2781",
    "CVE-2026-6746",
    "CVE-2026-6749",
    "CVE-2026-6750",
    "CVE-2026-6752",
    "CVE-2026-6754",
    "CVE-2026-6762",
    "CVE-2026-6767",
    "CVE-2026-6772",
    "CVE-2026-6785"
  );
  script_xref(name:"IAVA", value:"2026-A-0184-S");

  script_name(english:"Mozilla Firefox ESR < 115.35");

  script_set_attribute(attribute:"synopsis", value:
"A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.35. It is, therefore, affected
by multiple vulnerabilities as referenced in the mfsa2026-31 advisory.

  - Integer overflow in the Libraries component in NSS. This vulnerability was fixed in Firefox 148, Firefox
    ESR 140.8, Thunderbird 148, and Thunderbird 140.8. (CVE-2026-2781)

  - Memory safety bugs present in Firefox ESR 115.34, Firefox ESR 140.9, Thunderbird ESR 140.9, Firefox 149
    and Thunderbird 149. Some of these bugs showed evidence of memory corruption and we presume that with
    enough effort some of these could have been exploited to run arbitrary code. (CVE-2026-6785)

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/mfsa2026-31/");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Mozilla Firefox ESR version 115.35 or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-2781");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/02/24");
  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_esr");
  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:"MacOS X Local Security Checks");

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

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

  exit(0);
}

include('vdf.inc');

# @tvdl-content-verify-only
var vuln_data = {
  "metadata": {
    "spec_version": "1.0"
  },
  "requires": [
    {
      "scope": "target",
      "match": {
        "os": "macos"
      }
    }
  ],
  "checks": [
    {
      "product": {
        "name": "Mozilla Firefox ESR",
        "type": "app"
      },
      "check_algorithm": "default",
      "constraints": [
        {
          "min_version": "115.0.0",
          "fixed_version": "115.35"
        }
      ]
    }
  ]
};

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