GoodTech SSH Server SFTP Multiple BOF Vulnerabilities

# Copyright (C) 2008 Greenbone Networks GmbH
# 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-or-later
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License
# as published by the Free Software Foundation; either version 2
# of the License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.900166");
  script_version("2022-05-11T11:17:52+0000");
  script_tag(name:"last_modification", value:"2022-05-11 11:17:52 +0000 (Wed, 11 May 2022)");
  script_tag(name:"creation_date", value:"2008-10-31 14:50:32 +0100 (Fri, 31 Oct 2008)");
  script_cve_id("CVE-2008-4726");
  script_copyright("Copyright (C) 2008 Greenbone Networks GmbH");
  script_tag(name:"cvss_base", value:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_category(ACT_GATHER_INFO);
  script_tag(name:"qod_type", value:"registry");
  script_family("Denial of Service");
  script_name("GoodTech SSH Server SFTP Multiple BOF Vulnerabilities");
  script_dependencies("smb_reg_service_pack.nasl");
  script_mandatory_keys("SMB/WindowsVersion");
  script_require_ports(139, 445);

  script_tag(name:"impact", value:"Successful exploitation allows execution of arbitrary code, and denial of
  service.");

  script_tag(name:"affected", value:"GoodTech SSH Server version 6.4 and prior on Windows (all)");

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

  script_tag(name:"solution", value:"Upgrade to GoodTech SSH Server version 6.5 or later.");

  script_tag(name:"summary", value:"GoodTech SSH server is prone to multiple buffer overflow vulnerabilities. The flaws are due to error in SFTP 'open', 'opendir', and 'unlink' commands. This can be exploited by passing overly long string argument.");

  script_xref(name:"URL", value:"http://milw0rm.com/exploits/6804");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/31879");
  script_xref(name:"URL", value:"http://secunia.com/advisories/32375/");
  script_xref(name:"URL", value:"http://www.frsirt.com/english/advisories/2008/2895");
  script_xref(name:"URL", value:"http://www.goodtechsys.com/sshdnt2000.asp");

  exit(0);
}

include("smb_nt.inc");

if(!get_kb_item("SMB/WindowsVersion")){
  exit(0);
}

sshVer = registry_get_sz(key:"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\GoodTech SSH Server", item:"DisplayVersion");
if(sshVer){
  if(egrep(pattern:"^([0-5](\..*)|6\.[0-4])$", string:sshVer)){
    security_message(port:0);
  }
}