Null FTP Server SITE Command Execution Vulnerability

# SPDX-FileCopyrightText: 2009 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("1.3.6.1.4.1.25623.1.0.800546");
  script_version("2023-07-27T05:05:08+0000");
  script_tag(name:"last_modification", value:"2023-07-27 05:05:08 +0000 (Thu, 27 Jul 2023)");
  script_tag(name:"creation_date", value:"2009-04-02 08:15:32 +0200 (Thu, 02 Apr 2009)");
  script_tag(name:"cvss_base", value:"7.1");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:H/Au:S/C:C/I:C/A:C");
  script_cve_id("CVE-2008-6534");
  script_name("Null FTP Server SITE Command Execution Vulnerability");
  script_xref(name:"URL", value:"http://secunia.com/advisories/32999");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/32656");
  script_xref(name:"URL", value:"http://www.milw0rm.com/exploits/7355");
  script_xref(name:"URL", value:"http://xforce.iss.net/xforce/xfdb/47099");

  script_tag(name:"qod_type", value:"remote_banner");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("FTP");
  script_dependencies("gb_nullftp_server_detect.nasl");
  script_mandatory_keys("NullFTP/Server/Ver");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to execute arbitrary codes
  in the context of the application.");

  script_tag(name:"affected", value:"NULL FTP Server Free and Pro version prior to 1.1.0.8 on Windows");
  script_tag(name:"insight", value:"An error is generated while handling custom SITE command containing shell
  metacharacters such as & (ampersand) as a part of an argument.");

  script_tag(name:"solution", value:"Upgrade to the latest version 1.1.0.8 or later.");

  script_tag(name:"summary", value:"Null FTP Server is prone to an arbitrary code execution vulnerability.");

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

  exit(0);
}

include("version_func.inc");

ver = get_kb_item("NullFTP/Server/Ver");
if(!ver)
  exit(0);

if(version_is_less(version:ver, test_version:"1.1.0.8")){
  report = report_fixed_ver(installed_version:ver, fixed_version:"1.1.0.8");
  security_message(port: 0, data: report);
}