Telegram Desktop <= 2.1.13 Protection Mechanism Bypass Vulnerability - Windows

# SPDX-FileCopyrightText: 2020 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:telegram:tdesktop";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.113767");
  script_version("2025-02-25T13:24:30+0000");
  script_tag(name:"last_modification", value:"2025-02-25 13:24:30 +0000 (Tue, 25 Feb 2025)");
  script_tag(name:"creation_date", value:"2020-10-08 08:46:37 +0000 (Thu, 08 Oct 2020)");
  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:"severity_vector", value:"CVSS:3.1/AV:L/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:"2021-01-28 18:02:00 +0000 (Thu, 28 Jan 2021)");

  script_tag(name:"qod_type", value:"registry");

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

  script_cve_id("CVE-2020-17448");

  script_name("Telegram Desktop <= 2.1.13 Protection Mechanism Bypass Vulnerability - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2020 Greenbone AG");
  script_family("General");
  script_dependencies("gb_telegram_desktop_smb_login_detect.nasl");
  script_mandatory_keys("telegram/desktop/detected");

  script_tag(name:"summary", value:"Telegram Desktop is prone to a protection mechanism bypass
  vulnerability.");

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

  script_tag(name:"insight", value:"Telegram Desktop allows a spoofed file type to bypass the
  Dangerous File Type Execution protection mechanism, by using the chat windows with a filename
  that lacks an extension.");

  script_tag(name:"impact", value:"Successful exploitation would for example allow an attacker to
  execute arbitrary code on the target machine by sending a malicious file to the victim.");

  script_tag(name:"affected", value:"Telegram Desktop through version 2.1.13.");

  script_tag(name:"solution", value:"Update to version 2.2.0 or later.");

  script_xref(name:"URL", value:"https://github.com/VijayT007/Vulnerability-Database/blob/master/Telegram-CVE-2020-17448");

  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: "2.2.0" ) ) {
  report = report_fixed_ver( installed_version: version, fixed_version: "2.2.0", install_path: location );
  security_message( data: report, port: 0 );
  exit( 0 );
}

exit( 99 );