Google Chrome MEGA Extension Trojan - Linux

# SPDX-FileCopyrightText: 2018 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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813790");
  script_version("2024-09-25T05:06:11+0000");
  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:"2024-09-25 05:06:11 +0000 (Wed, 25 Sep 2024)");
  script_tag(name:"creation_date", value:"2018-09-10 12:21:10 +0530 (Mon, 10 Sep 2018)");
  script_name("Google Chrome MEGA Extension Trojan - Linux");

  script_tag(name:"summary", value:"Detection of a trojaned MEGA extension for Google Chrome.");

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

  script_tag(name:"insight", value:"The flaw exists as a trojaned version of MEGA extension was
  available in the Google Chrome webstore for installation and update.");

  script_tag(name:"impact", value:"Upon installation or auto update to trojaned version, extension
  would exfiltrate credentials for sites including amazon.com, live.com, github.com, google.com
  (or webstore login), myetherwallet.com, mymonero.com, idex.market and HTTP POST requests to any
  other sites. Then it will send them to a server located in Ukraine.");

  script_tag(name:"affected", value:"MEGA extension version 3.39.4 for Chrome.");

  script_tag(name:"solution", value:"Update to MEGA extension version 3.39.5 or later.");

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

  script_xref(name:"URL", value:"https://thehackernews.com/2018/09/mega-file-upload-chrome-extension.html");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Malware");
  script_dependencies("gb_google_chrome_detect_lin.nasl");
  script_mandatory_keys("Google-Chrome/Linux/Ver");
  exit(0);
}

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

sock = ssh_login_or_reuse_connection();
if(!sock)
  exit(0);

paths = ssh_find_file(file_name:"/mega\.html$", useregex:TRUE, sock:sock);
if(!paths)
  exit(0);

foreach path(paths) {

  ver = eregmatch(pattern:"(.*(g|G)oogle.(c|C)hrome.*(e|E)xtensions.*[A-za-z]+/([0-9._]+).*)(M|m)ega/html/mega\.html", string:path);
  if(!ver[5])
    continue;

  version = ver[5];
  filePath = ver[0];

  if(version_is_equal(version:version, test_version:"3.39.4")) {
    report = report_fixed_ver(installed_version:version, fixed_version:"3.39.5", install_path:filePath);
    security_message(port:0, data:report);
    exit(0);
  }
}

exit(99);