FlashGet FTP PWD Response Remote Buffer Overflow Vulnerability

# SPDX-FileCopyrightText: 2008 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("1.3.6.1.4.1.25623.1.0.900203");
  script_version("2025-03-05T05:38:52+0000");
  script_tag(name:"last_modification", value:"2025-03-05 05:38:52 +0000 (Wed, 05 Mar 2025)");
  script_tag(name:"creation_date", value:"2008-08-22 10:29:01 +0200 (Fri, 22 Aug 2008)");
  script_cve_id("CVE-2008-4321");
  script_copyright("Copyright (C) 2008 Greenbone AG");
  script_tag(name:"cvss_base", value:"9.3");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:M/Au:N/C:C/I:C/A:C");
  script_category(ACT_GATHER_INFO);
  script_family("Denial of Service");
  script_name("FlashGet FTP PWD Response Remote Buffer Overflow Vulnerability");
  script_dependencies("smb_reg_service_pack.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);

  script_xref(name:"URL", value:"http://www.frsirt.com/english/advisories/2008/2381");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/30685");

  script_tag(name:"summary", value:"FlashGet is prone to a remote buffer overflow vulnerability.");

  script_tag(name:"insight", value:"Error exists when handling overly long FTP PWD responses.");

  script_tag(name:"affected", value:"FlashGet 1.9 (1.9.6.1073) and prior versions on Windows (All).");

  script_tag(name:"solution", value:"Update to version 3.3 or later.");

  script_tag(name:"impact", value:"Successful exploitation will allow execution of arbitrary code
  by tricking a user into connecting to a malicious ftp server.");

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

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

  exit(0);
}

include("smb_nt.inc");
include("secpod_smb_func.inc");

key = "SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\";

foreach entry(registry_enum_keys(key:key)) {

  # 1.8.x or older
  if("FlashGet(Jetcar)" >< entry || "FlashGet(JetCar)" >< entry) {
    security_message( port: 0, data: "The target host was found to be vulnerable" );
    exit(0);
  }

  if("FlashGet" >< entry) {

    flashVer = registry_get_sz(item:"DisplayVersion", key:key + entry);

    # <= 1.9.6.1073 (1.9 series)
    if(flashVer && egrep(pattern:"^(1\.9|1\.9\.[0-5](\..*)?|1\.9\.6(\.(0?[0-9]?[0-9]?[0-9]|10[0-6][0-9]|107[0-3]))?)$", string:flashVer)){
      security_message( port: 0, data: "The target host was found to be vulnerable" );
      exit(0);
    }
    exit(99);
  }
}

exit(0);