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Mozilla Firefox Security Advisories (MFSA2023-53, MFSA2023-56) - Windows

🗓️ 21 Dec 2023 00:00:00Reported by Copyright (C) 2023 Greenbone AGType 
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Mozilla Firefox prone to multiple vulnerabilities. Upgrade to version 121 or later

Related
Refs
Code
# SPDX-FileCopyrightText: 2023 Greenbone AG
# Some text descriptions might be excerpted from (a) referenced
# source(s), and are Copyright (C) by the respective right holder(s).
#
# SPDX-License-Identifier: GPL-2.0-only

CPE = "cpe:/a:mozilla:firefox";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.832750");
  script_version("2025-11-14T15:41:06+0000");
  script_cve_id("CVE-2023-6856", "CVE-2023-6135", "CVE-2023-6865", "CVE-2023-6858",
                "CVE-2023-6859", "CVE-2023-6866", "CVE-2023-6860", "CVE-2023-6867",
                "CVE-2023-6861", "CVE-2023-6869", "CVE-2023-6871", "CVE-2023-6872",
                "CVE-2023-6863", "CVE-2023-6864", "CVE-2023-6873");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_tag(name:"last_modification", value:"2025-11-14 15:41:06 +0000 (Fri, 14 Nov 2025)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-12-22 10:28:00 +0000 (Fri, 22 Dec 2023)");
  script_tag(name:"creation_date", value:"2023-12-21 14:33:12 +0530 (Thu, 21 Dec 2023)");
  script_name("Mozilla Firefox Security Advisories (MFSA2023-53, MFSA2023-56) - Windows");

  script_tag(name:"summary", value:"Mozilla Firefox is prone to multiple
  vulnerabilities.");

  script_tag(name:"vuldetect", value:"Checks if a vulnerable version is present
  on the target host.");

  script_tag(name:"insight", value:"Multiple flaws exist due to,

  - Heap-buffer-overflow affecting WebGL DrawElementsInstanced method with Mesa VM driver.

  - NSS susceptible to Minerva attack.

  - Potential exposure of uninitialized data in EncryptingOutputStream.

  Please see the references for more information about the vulnerabilities.");

  script_tag(name:"impact", value:"Successful exploitation will allow attackers
  to execute arbitrary code, discose sensitive information and cause denial of service
  on an affected system.");

  script_tag(name:"affected", value:"Mozilla Firefox version before
  121 on Windows.");

  script_tag(name:"solution", value:"Upgrade to version 121 or later,
  Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"registry");
  script_xref(name:"URL", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2023-56/");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2023 Greenbone AG");
  script_family("General");
  script_dependencies("gb_firefox_detect_win.nasl");
  script_mandatory_keys("Firefox/Win/Ver");
  exit(0);
}

include("host_details.inc");
include("version_func.inc");

if(!infos = get_app_version_and_location(cpe:CPE, exit_no_version:TRUE))
  exit( 0 );

vers = infos["version"];
path = infos["location"];

if(version_is_less(version:vers, test_version:"121")) {
  report = report_fixed_ver(installed_version:vers, fixed_version:"121", install_path:path);
  security_message(port:0, data:report);
  exit(0);
}

exit(99);

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14 Nov 2025 00:00Current
7.7High risk
Vulners AI Score7.7
CVSS 3.18.8
EPSS0.2063
SSVC
24