Mozilla Firefox Security Advisory (MFSA2022-40) - Linux

# SPDX-FileCopyrightText: 2022 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("1.3.6.1.4.1.25623.1.2.1.2022.40");
  script_version("2026-07-02T06:53:57+0000");
  script_tag(name:"last_modification", value:"2026-07-02 06:53:57 +0000 (Thu, 02 Jul 2026)");
  script_tag(name:"creation_date", value:"2022-09-21 05:31:55 +0000 (Wed, 21 Sep 2022)");
  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:"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:"2023-01-04 02:59:41 +0000 (Wed, 04 Jan 2023)");

  script_cve_id("CVE-2022-3266", "CVE-2022-40956", "CVE-2022-40957", "CVE-2022-40958", "CVE-2022-40959", "CVE-2022-40960", "CVE-2022-40962", "CVE-2022-46880");

  script_name("Mozilla Firefox Security Advisory (MFSA2022-40) - Linux");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2022 Greenbone AG");
  script_family("General");
  script_dependencies("gb_firefox_detect_lin.nasl");
  script_mandatory_keys("mozilla/firefox/linux/detected");

  script_xref(name:"Advisory-ID", value:"MFSA2022-40");
  script_xref(name:"URL", value:"https://www.mozilla.org/en-US/security/advisories/mfsa2022-40/");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1749292");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1767360");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1770094");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1776655%2C1777574%2C1784835%2C1785109%2C1786502%2C1789440");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1777604");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1779993");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1782211");
  script_xref(name:"URL", value:"https://bugzilla.mozilla.org/buglist.cgi?bug_id=1787633");

  script_tag(name:"summary", value:"The remote host is missing an update for Mozilla Firefox, announced via the advisory MFSA2022-40.");

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

  script_tag(name:"insight", value:"CVE-2022-3266: Out of bounds read when decoding H264

An out-of-bounds read can occur when decoding H264 video. This results in a potentially exploitable crash.

CVE-2022-40959: Bypassing FeaturePolicy restrictions on transient pages

During iframe navigation, certain pages did not have their FeaturePolicy fully initialized leading to a bypass that leaked device permissions into untrusted subdocuments.

CVE-2022-40960: Data-race when parsing non-UTF-8 URLs in threads

Concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a use-after-free causing a potentially exploitable crash.

CVE-2022-46880: Use-after-free in WebGL

A missing check related to tex units could have led to a use-after-free and potentially exploitable crash.*Note*: This advisory was added on December 13th, 2022 after we better understood the impact of the issue. The fix was included in the original release of Firefox 105.

CVE-2022-40958: Bypassing Secure Context restriction for cookies with __Host and __Secure prefix

By injecting a cookie with certain special characters, an attacker on a shared subdomain which is not a secure context could set and thus overwrite cookies from a secure context, leading to session fixation and other attacks.

CVE-2022-40956: Content-Security-Policy base-uri bypass

When injecting an HTML base element, some requests would ignore the CSP's base-uri settings and accept the injected element's base instead.

CVE-2022-40957: Incoherent instruction cache when building WASM on ARM64

Inconsistent data in instruction and data cache when creating wasm code could lead to a potentially exploitable crash.*This bug only affects Firefox on ARM64 platforms.*

CVE-2022-40962: Memory safety bugs fixed in Firefox 105 and Firefox ESR 102.3

Mozilla developers Nika Layzell, Timothy Nikkel, Sebastian Hengst, Andreas Pehrson, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 104 and Firefox ESR 102.2. 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.");

  script_tag(name:"affected", value:"Mozilla Firefox versions prior to 105.");

  script_tag(name:"solution", value:"The vendor has released an update. Please see the reference(s) for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"executable_version_unreliable");

  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);

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

if (version_is_less(version: version, test_version: "105")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "105", install_path: location);
  security_message(port: 0, data: report);
  exit(0);
}

exit(99);