PuTTY SCP Multiple Spoofing Vulnerabilities - Windows

# SPDX-FileCopyrightText: 2019 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:putty:putty";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.814661");
  script_version("2024-02-15T05:05:40+0000");
  script_tag(name:"last_modification", value:"2024-02-15 05:05:40 +0000 (Thu, 15 Feb 2024)");
  script_tag(name:"creation_date", value:"2019-01-17 15:17:22 +0530 (Thu, 17 Jan 2019)");
  script_tag(name:"cvss_base", value:"4.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:N/C:P/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2023-02-23 23:16:00 +0000 (Thu, 23 Feb 2023)");

  script_cve_id("CVE-2019-6109", "CVE-2019-6110");

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

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

  script_name("PuTTY SCP Multiple Spoofing Vulnerabilities - Windows");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("General");
  script_dependencies("gb_putty_portable_detect.nasl");
  script_mandatory_keys("putty/detected");

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

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

  - A missing character encoding in the progress display, the object name
    can be used to manipulate the client output.

  - Accepting and displaying arbitrary stderr output from the scp server, a
    malicious server can manipulate the client output.");

  script_tag(name:"impact", value:"Successful exploitation will allow remote
  servers to spoof the client output.");

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

  script_tag(name:"affected", value:"PuTTY version 0.70 and earlier on Windows.");

  script_tag(name:"solution", value:"Update to version 0.71 or later.");

  script_xref(name:"URL", value:"https://sintonen.fi/advisories/scp-client-multiple-vulnerabilities.txt");
  script_xref(name:"URL", value:"https://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/pscp-unsanitised-server-output.html");

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

if( version_is_less( version:version, test_version:"0.71" ) ) {
  report = report_fixed_ver( installed_version:version, fixed_version:"0.71", install_path:path );
  security_message( data:report, port:0 );
  exit( 0 );
}

exit( 99 );