Samba Server 'CVE-2017-15275' Heap Memory Information Leak

# SPDX-FileCopyrightText: 2017 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

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

if(description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.108295");
  script_version("2023-07-14T16:09:27+0000");
  script_cve_id("CVE-2017-15275");
  script_tag(name:"cvss_base", value:"5.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:N/A:N");
  script_tag(name:"last_modification", value:"2023-07-14 16:09:27 +0000 (Fri, 14 Jul 2023)");
  script_tag(name:"severity_vector", value:"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2022-08-29 20:43:00 +0000 (Mon, 29 Aug 2022)");
  script_tag(name:"creation_date", value:"2017-11-23 07:09:22 +0100 (Thu, 23 Nov 2017)");
  script_name("Samba Server 'CVE-2017-15275' Heap Memory Information Leak");
  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2017 Greenbone AG");
  script_family("General");
  script_dependencies("smb_nativelanman.nasl", "gb_samba_detect.nasl");
  script_mandatory_keys("samba/smb_or_ssh/detected");

  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2017-15275.html");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/101908");

  script_tag(name:"summary", value:"Samba is prone to a heap memory information leak.");

  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 the server which may return the
  contents of heap allocated memory to the client.");

  script_tag(name:"impact", value:"There is no known vulnerability associated with this error,
  but uncleared heap memory may contain previously used data that may help an attacker compromise
  the server via other methods. Uncleared heap memory may potentially contain password hashes or
  other high-value data.");

  script_tag(name:"affected", value:"Samba versions 3.6.0 to 4.5.14, 4.6.x prior to
  4.6.11, 4.7.x prior to 4.7.3.");

  script_tag(name:"solution", value:"Update to Samba 4.5.15, 4.6.11, 4.7.3 or later.");

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

  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:"3.6.0", test_version2:"4.5.14" ) ) {
  fix = "4.5.15";
} else if( version_in_range( version:vers, test_version:"4.6.0", test_version2:"4.6.10" ) ) {
  fix = "4.6.11";
} else if( version_in_range( version:vers, test_version:"4.7.0", test_version2:"4.7.2" ) ) {
  fix = "4.7.3";
}

if( fix ) {
  report = report_fixed_ver( installed_version:vers, fixed_version:fix, install_path:loc );
  security_message( port:port, data:report );
  exit( 0 );
}

exit( 99 );