Kerberos5 Multiple Integer Underflow Vulnerabilities

###############################################################################
# OpenVAS Vulnerability Test
#
# Kerberos5 Multiple Integer Underflow Vulnerabilities
#
# Authors:
# Antu Sanadi <[email protected]>
#
# Copyright:
# Copyright (c) 2010 Greenbone Networks GmbH, http://www.greenbone.net
#
# 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.
###############################################################################

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.800433");
  script_version("2019-12-18T15:04:04+0000");
  script_tag(name:"last_modification", value:"2019-12-18 15:04:04 +0000 (Wed, 18 Dec 2019)");
  script_tag(name:"creation_date", value:"2010-01-20 08:21:11 +0100 (Wed, 20 Jan 2010)");
  script_tag(name:"cvss_base", value:"10.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_cve_id("CVE-2009-4212");
  script_name("Kerberos5 Multiple Integer Underflow Vulnerabilities");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (c) 2010 Greenbone Networks GmbH");
  script_family("Buffer overflow");
  script_dependencies("gb_kerberos5_detect.nasl");
  script_mandatory_keys("Kerberos5/Ver");

  script_xref(name:"URL", value:"https://bugzilla.redhat.com/show_bug.cgi?id=545015");
  script_xref(name:"URL", value:"http://web.mit.edu/kerberos/advisories/MITKRB5-SA-2009-004.txt");
  script_xref(name:"URL", value:"http://web.mit.edu/kerberos/advisories/2009-004-patch_1.6.3.txt");
  script_xref(name:"URL", value:"http://web.mit.edu/kerberos/advisories/2009-004-patch_1.7.txt");

  script_tag(name:"affected", value:"kerberos5 version 1.3 through 1.6.3, and version 1.7.");

  script_tag(name:"insight", value:"Multiple Integer Underflow due to errors within the 'AES' and 'RC4'
  decryption functionality in the crypto library in MIT Kerberos when
  processing ciphertext with a length that is too short to be valid.");

  script_tag(name:"summary", value:"This host is installed with Kerberos5 and is prone to multiple
  Integer Underflow vulnerability.");

  script_tag(name:"solution", value:"Apply the patch mentioned in the advisories below.");

  script_tag(name:"impact", value:"Successful exploitation will allow attacker to cause a denial of service
  or possibly execute arbitrary code.");

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

  exit(0);
}

CPE = "cpe:/a:mit:kerberos";

include( "host_details.inc" );
include( "version_func.inc" );

if( ! version = get_app_version( cpe: CPE ) ) exit( 0 );

if( version_in_range( version: version, test_version: "1.3", test_version2: "1.6.3" )
  || version_is_equal( version: version, test_version: "1.7" ) ) {

  report = report_fixed_ver( installed_version: version, fixed_version: "Apply the referenced patch" );
  security_message( data: report, port: 0 );
  exit( 0 );
}

exit( 99 );