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Mozilla Firefox ESR Security Advisories (MFSA2021-23, MFSA2021-25) - Mac OS X

🗓️ 08 Jul 2021 00:00:00Reported by Copyright (C) 2021 Greenbone AGType 
openvas
 openvas
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This host is missing a security update according to Mozilla advisory. The flaw is due to a memory safety bug in Firefox ESR. Successful exploitation will allow attackers to run arbitrary code on victim's system. Affected version is Mozilla Firefox ESR before 78.11 on Mac OS X. Update to version 78.11 or later

Related
Refs
Code
# SPDX-FileCopyrightText: 2021 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_esr";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.818161");
  script_version("2025-09-12T05:38:45+0000");
  script_cve_id("CVE-2021-29967");
  script_tag(name:"cvss_base", value:"6.8");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2025-09-12 05:38:45 +0000 (Fri, 12 Sep 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:"2021-06-25 13:23:00 +0000 (Fri, 25 Jun 2021)");
  script_tag(name:"creation_date", value:"2021-07-08 16:31:05 +0530 (Thu, 08 Jul 2021)");
  script_name("Mozilla Firefox ESR Security Advisories (MFSA2021-23, MFSA2021-25) - Mac OS X");

  script_tag(name:"summary", value:"This host is missing a security update
  according to Mozilla advisory.");

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

  script_tag(name:"insight", value:"The flaw is due to a memory safety bug in
  Firefox ESR.");

  script_tag(name:"impact", value:"Successful exploitation will allow
  attackers to run arbitrary code on victim's system.");

  script_tag(name:"affected", value:"Mozilla Firefox ESR version before
  78.11 on Mac OS X.");

  script_tag(name:"solution", value:"Update Mozilla Firefox ESR to version 78.11
  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/mfsa2021-24/");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2021 Greenbone AG");
  script_family("General");
  script_dependencies("gb_mozilla_prdts_detect_macosx.nasl");
  script_mandatory_keys("Mozilla/Firefox-ESR/MacOSX/Version");
  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:"78.11")) {
  report = report_fixed_ver(installed_version:vers, fixed_version:"78.11", install_path:path);
  security_message(port:0, data:report);
  exit(0);
}

exit(99);

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12 Sep 2025 00:00Current
8.2High risk
Vulners AI Score8.2
CVSS 26.8
CVSS 3.18.8
EPSS0.01368
22