freeSSHd Pre-Authentication Error Remote DoS Vulnerability

###############################################################################
# OpenVAS Vulnerability Test
# $Id: secpod_freesshd_pre_auth_dos_vuln.nasl 7573 2017-10-26 09:18:50Z cfischer $
#
# freeSSHd Pre-Authentication Error Remote DoS Vulnerability
#
# Authors:
# Nikita MR <[email protected]>
#
# Copyright:
# Copyright (c) 2009 SecPod, http://www.secpod.com
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2
# (or any later version), as published by the Free Software Foundation.
#
# 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.
################################################################################

tag_impact = "Successful attack could allow attackers to crash application to cause
  denial of service.
  Impact Level: Application";
tag_affected = "freeSSHd version 1.2.4 and prior.";
tag_insight = "The flaw is due to an unspecified pre-authentication error.";
tag_solution = "Upgrade to freeSSHd version 1.2.6 or later
  For updates refer to http://www.freesshd.com/";
tag_summary = "This host has freeSSHd installed and is prone to Denial of Service
  vulnerability.";

if(description)
{
  script_id(900960);
  script_version("$Revision: 7573 $");
  script_tag(name:"last_modification", value:"$Date: 2017-10-26 11:18:50 +0200 (Thu, 26 Oct 2017) $");
  script_tag(name:"creation_date", value:"2009-10-01 12:15:29 +0200 (Thu, 01 Oct 2009)");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:N/I:N/A:P");
  script_cve_id("CVE-2009-3340");
  script_bugtraq_id(36235);
  script_name("freeSSHd Pre-Authentication Error Remote DoS Vulnerability");
  script_xref(name : "URL" , value : "http://intevydis.com/vd-list.shtml");
  script_xref(name : "URL" , value : "http://www.intevydis.com/blog/?p=57");
  script_xref(name : "URL" , value : "http://secunia.com/advisories/36506");
  script_xref(name : "URL" , value : "http://securitytracker.com/alerts/2009/Sep/1022811.html");

  script_tag(name:"qod_type", value:"registry");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 SecPod");
  script_family("Denial of Service");
  script_dependencies("secpod_freesshd_detect.nasl");
  script_require_keys("freeSSHd/Ver");
  script_require_ports("Services/ssh", 22);
  script_tag(name : "impact" , value : tag_impact);
  script_tag(name : "affected" , value : tag_affected);
  script_tag(name : "insight" , value : tag_insight);
  script_tag(name : "solution" , value : tag_solution);
  script_tag(name : "summary" , value : tag_summary);
  exit(0);
}


include("version_func.inc");

sshdVer = get_kb_item("freeSSHd/Ver");
if(sshdVer)
{
  # Grep for freeSSHd version 1.2.4 and prior
  if(version_is_less_equal(version:sshdVer, test_version:"1.2.4")){
    security_message(port:0);
  }
}