Apache Hadoop < 2.7.7 Privilege Escalation Vulnerability

# SPDX-FileCopyrightText: 2018 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:apache:hadoop";

if (description)
{
  script_oid("1.3.6.1.4.1.25623.1.0.141753");
  script_version("2026-01-28T05:49:43+0000");
  script_tag(name:"last_modification", value:"2026-01-28 05:49:43 +0000 (Wed, 28 Jan 2026)");
  script_tag(name:"creation_date", value:"2018-12-05 09:20:40 +0700 (Wed, 05 Dec 2018)");
  script_tag(name:"cvss_base", value:"9.0");
  script_tag(name:"cvss_base_vector", value:"AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_tag(name:"severity_vector", value:"CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_tag(name:"severity_origin", value:"NVD");
  script_tag(name:"severity_date", value:"2019-10-03 00:03:00 +0000 (Thu, 03 Oct 2019)");

  script_cve_id("CVE-2018-11766");

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

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

  script_name("Apache Hadoop < 2.7.7 Privilege Escalation Vulnerability");

  script_category(ACT_GATHER_INFO);

  script_copyright("Copyright (C) 2018 Greenbone AG");
  script_family("Web application abuses");
  script_dependencies("gb_apache_hadoop_http_detect.nasl");
  script_mandatory_keys("apache/hadoop/detected");

  script_tag(name:"summary", value:"In Apache Hadoop 2.7.4 to 2.7.6, the security fix for CVE-2016-6811 is
incomplete. A user who can escalate to yarn user can possibly run arbitrary commands as root user.");

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

  script_tag(name:"affected", value:"Apache Hadoop 2.7.4 to 2.7.6.");

  script_tag(name:"solution", value:"Update to version 2.7.7 or later.");

  script_xref(name:"URL", value:"https://www.openwall.com/lists/oss-security/2018/11/27/2");
  script_xref(name:"URL", value:"http://www.securityfocus.com/bid/106035");

  exit(0);
}

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

if (!port = get_app_port(cpe: CPE))
  exit(0);

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

if (version_in_range(version: version, test_version: "2.7.4", test_version2: "2.7.6")) {
  report = report_fixed_ver(installed_version: version, fixed_version: "2.7.7");
  security_message(port: port, data: report);
  exit(0);
}

exit(99);