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openvasCopyright (C) 2018 Greenbone Networks GmbHOPENVAS:1361412562310813782
HistoryAug 17, 2018 - 12:00 a.m.

Samba 'libsmbclient' Heap Buffer Overflow Vulnerability - Aug18

2018-08-1700:00:00
Copyright (C) 2018 Greenbone Networks GmbH
plugins.openvas.org
14

0.012 Low

EPSS

Percentile

83.3%

This host is running Samba and is prone
to a heap based buffer overflow vulnerability.

###############################################################################
# OpenVAS Vulnerability Test
#
# Samba 'libsmbclient' Heap Buffer Overflow Vulnerability - Aug18
#
# Authors:
# Shakeel <[email protected]>
#
# Copyright:
# Copyright (C) 2018 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.
###############################################################################

CPE = "cpe:/a:samba:samba";

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.813782");
  script_version("2019-07-05T09:54:18+0000");
  script_cve_id("CVE-2018-10858");
  script_tag(name:"cvss_base", value:"6.5");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:P/I:P/A:P");
  script_tag(name:"last_modification", value:"2019-07-05 09:54:18 +0000 (Fri, 05 Jul 2019)");
  script_tag(name:"creation_date", value:"2018-08-17 12:10:38 +0530 (Fri, 17 Aug 2018)");
  script_name("Samba 'libsmbclient' Heap Buffer Overflow Vulnerability - Aug18");

  script_tag(name:"summary", value:"This host is running Samba and is prone
  to a heap based buffer overflow vulnerability.");

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

  script_tag(name:"insight", value:"The flaw exists due to insufficient input
  validation on client directory listing in libsmbclient.");

  script_tag(name:"impact", value:"Successful exploitation will allow an attacker
  to conduct a denial of service attack.");

  script_tag(name:"affected", value:"Samba versions 3.2.0 through 4.8.3");

  script_tag(name:"solution", value:"Upgrade to Samba 4.6.16, 4.7.9 or 4.8.4
  or later. Please see the references for more information.");

  script_tag(name:"solution_type", value:"VendorFix");
  script_tag(name:"qod_type", value:"remote_banner_unreliable");
  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2018-10858.html");
  script_xref(name:"URL", value:"https://www.samba.org/samba/history/samba-4.6.16.html");
  script_xref(name:"URL", value:"https://www.samba.org/samba/history/samba-4.7.9.html");
  script_xref(name:"URL", value:"https://www.samba.org/samba/history/samba-4.8.4.html");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2018 Greenbone Networks GmbH");
  script_family("General");
  script_dependencies("smb_nativelanman.nasl", "gb_samba_detect.nasl");
  script_mandatory_keys("samba/smb_or_ssh/detected");
  exit(0);
}

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

if(isnull(port = get_app_port(cpe:CPE))) exit(0);
if(!infos = get_app_version_and_location(cpe:CPE, port:port, exit_no_version:TRUE)) exit(0);
vers = infos['version'];
loc = infos['location'];

if(version_in_range(version:vers, test_version:"3.2.0", test_version2:"4.6.15")){
  fix = "4.6.16";
}

else if(version_in_range(version:vers, test_version:"4.7.0", test_version2:"4.7.8")){
  fix = "4.7.9";
}

else if(version_in_range(version:vers, test_version:"4.8.0", test_version2:"4.8.3")){
  fix = "4.8.4";
}

if(fix){
  report = report_fixed_ver( installed_version:vers, fixed_version: fix + " or apply patch", install_path:loc);
  security_message( data:report, port:port);
  exit(0);
}
exit(99);