Samba Share Path Definition Escape Vulnerability (CVE-2019-10197)

# SPDX-FileCopyrightText: 2019 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("1.3.6.1.4.1.25623.1.0.142843");
  script_version("2025-09-16T05:38:45+0000");
  script_tag(name:"last_modification", value:"2025-09-16 05:38:45 +0000 (Tue, 16 Sep 2025)");
  script_tag(name:"creation_date", value:"2019-09-04 07:31:46 +0000 (Wed, 04 Sep 2019)");
  script_tag(name:"cvss_base", value:"6.4");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2020-08-18 15:05:00 +0000 (Tue, 18 Aug 2020)");

  script_cve_id("CVE-2019-10197");

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

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

  script_name("Samba Share Path Definition Escape Vulnerability (CVE-2019-10197)");

  script_category(ACT_GATHER_INFO);
  script_copyright("Copyright (C) 2019 Greenbone AG");
  script_family("General");
  script_dependencies("smb_nativelanman.nasl", "gb_samba_detect.nasl");
  script_mandatory_keys("samba/smb_or_ssh/detected");

  script_tag(name:"summary", value:"Samba is prone to a share path definition escape vulnerability.");

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

  script_tag(name:"insight", value:"Under certain parameter configurations, when an SMB client accesses a network
  share and the user does not have permission to access the share root directory, it is possible for the user to
  escape from the share to see the complete '/' filesystem. Unix permission checks in the kernel are still
  enforced.");

  script_tag(name:"affected", value:"Samba versions 4.9.x, 4.10.x and 4.11.x.");

  script_tag(name:"solution", value:"Update to version 4.9.13, 4.10.8, 4.11.0rc3 or later.");

  script_xref(name:"URL", value:"https://www.samba.org/samba/security/CVE-2019-10197.html");

  exit(0);
}

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

version = infos["version"];
path = infos["location"];

if (version_in_range(version: version, test_version: "4.9.0", test_version2: "4.9.12")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.9.13", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "4.10.0", test_version2: "4.10.7")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.10.8", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

if (version_in_range(version: version, test_version: "4.11.0rc1", test_version2: "4.11.0rc2")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "4.11.0rc3", install_path: path);
  security_message(port: port, data: report);
  exit(0);
}

exit(99);