IPSec Tools Denial of Service 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("1.3.6.1.4.1.25623.1.0.800708");
  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:"2009-05-13 10:01:19 +0200 (Wed, 13 May 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-2009-1574");
  script_name("IPSec Tools Denial of Service Vulnerability");
  script_xref(name:"URL", value:"https://bugzilla.redhat.com/show_bug.cgi?id=497990");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2009/05/04/3");
  script_xref(name:"URL", value:"http://www.openwall.com/lists/oss-security/2009/04/29/6");

  script_tag(name:"qod_type", value:"executable_version_unreliable");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2009 Greenbone AG");
  script_family("Denial of Service");
  script_dependencies("gb_ipsec-tools_detect.nasl");
  script_mandatory_keys("IPSec/Tools/Ver");
  script_tag(name:"affected", value:"IPsec Tools version prior to 0.7.2");
  script_tag(name:"insight", value:"This flaw is due to a NULL pointer dereference caused when the file
  'racoon/isakmp_frag.c' processes fragmented packets without any payload.");
  script_tag(name:"solution", value:"Upgrade to the latest version 0.7.2.");
  script_tag(name:"summary", value:"IPSec Tools for Linux is prone to a denial of service (DoS) vulnerability.");
  script_tag(name:"impact", value:"Successful exploitation will let the attacker cause denial if service.");

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

  exit(0);
}

include("version_func.inc");

ipsecVer = get_kb_item("IPSec/Tools/Ver");
if(!ipsecVer)
  exit(0);

if(version_is_less(version:ipsecVer, test_version:"0.7.2")){
  report = report_fixed_ver(installed_version:ipsecVer, fixed_version:"0.7.2");
  security_message(port: 0, data: report);
}