Vulnerabilities > CVE-2018-11409 - Information Exposure vulnerability in Splunk

CVSS 5.3 - MEDIUM

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

LOW

Integrity impact

NONE

Availability impact

NONE

network

low complexity

splunk

CWE-200

nessus

exploit available

NVD

Published: 2018-06-08

Updated: 2018-07-31

Summary

Splunk through 7.0.1 allows information disclosure by appending __raw/services/server/info/server-info?output_mode=json to a query, as demonstrated by discovering a license key.

Vulnerable Configurations

Part	Description	Count
Application	Splunk Splunk Splunk 2.1 Splunk Splunk 2.2 Splunk Splunk 2.2.1 Splunk Splunk 2.2.3 Splunk Splunk 2.2.6 Splunk Splunk 3.0 Splunk Splunk 3.0.1 Splunk Splunk 3.0.2 Splunk Splunk 3.1 Splunk Splunk 3.1.1 Splunk Splunk 3.1.2 Splunk Splunk 3.1.3 Splunk Splunk 3.1.4 Splunk Splunk 3.2 Splunk Splunk 3.2.1 Splunk Splunk 3.2.2 Splunk Splunk 3.2.3 Splunk Splunk 3.2.4 Splunk Splunk 3.2.5 Splunk Splunk 3.2.6 Splunk Splunk 3.3 Splunk Splunk 3.3.1 Splunk Splunk 3.3.2 Splunk Splunk 3.3.3 Splunk Splunk 3.3.4 Splunk Splunk 3.4 Splunk Splunk 3.4.1 Splunk Splunk 3.4.2 Splunk Splunk 3.4.3 Splunk Splunk 3.4.5 Splunk Splunk 3.4.6 Splunk Splunk 3.4.8 Splunk Splunk 3.4.9 Splunk Splunk 3.4.10 Splunk Splunk 3.4.11 Splunk Splunk 3.4.12 Splunk Splunk 3.4.13 Splunk Splunk 3.4.14 Splunk Splunk 4.0 Splunk Splunk 4.0.1 Splunk Splunk 4.0.2 Splunk Splunk 4.0.3 Splunk Splunk 4.0.4 Splunk Splunk 4.0.5 Splunk Splunk 4.0.6 Splunk Splunk 4.0.7 Splunk Splunk 4.0.8 Splunk Splunk 4.0.9 Splunk Splunk 4.0.10 Splunk Splunk 4.0.11 Splunk Splunk 4.1 Splunk Splunk 4.1.1 Splunk Splunk 4.1.2 Splunk Splunk 4.1.3 Splunk Splunk 4.1.4 Splunk Splunk 4.1.5 Splunk Splunk 4.1.6 Splunk Splunk 4.1.7 Splunk Splunk 4.1.8 Splunk Splunk 4.2 Splunk Splunk 4.2. Splunk Splunk 4.2.1 Splunk Splunk 4.2.2 Splunk Splunk 4.2.3 Splunk Splunk 4.2.4 Splunk Splunk 4.2.5 Splunk Splunk 4.3 Splunk Splunk 4.3.0 Splunk Splunk 4.3.1 Splunk Splunk 4.3.2 Splunk Splunk 4.3.3 Splunk Splunk 4.3.4 Splunk Splunk 4.3.5 Splunk Splunk 4.3.6 Splunk Splunk 4.3.7 Splunk Splunk 5.0 Splunk Splunk 5.0.0 Splunk Splunk 5.0.1 Splunk Splunk 5.0.2 Splunk Splunk 5.0.3 Splunk Splunk 5.0.4 Splunk Splunk 5.0.5 Splunk Splunk 5.0.6 Splunk Splunk 5.0.7 Splunk Splunk 5.0.8 Splunk Splunk 5.0.9 Splunk Splunk 5.0.10 Splunk Splunk 5.0.11 Splunk Splunk 5.0.12 Splunk Splunk 5.0.13 Splunk Splunk 5.0.14 Splunk Splunk 5.0.15 Splunk Splunk 5.0.16 Splunk Splunk 5.0.17 Splunk Splunk 5.0.18 Splunk Splunk 6.0 Splunk Splunk 6.0.0 Splunk Splunk 6.0.1 Splunk Splunk 6.0.2 Splunk Splunk 6.0.3 Splunk Splunk 6.0.4 Splunk Splunk 6.0.5 Splunk Splunk 6.0.6 Splunk Splunk 6.0.7 Splunk Splunk 6.0.8 Splunk Splunk 6.0.9 Splunk Splunk 6.0.10 Splunk Splunk 6.0.11 Splunk Splunk 6.0.12 Splunk Splunk 6.0.13 Splunk Splunk 6.0.14 Splunk Splunk 6.0.15 Splunk Splunk 6.1.0 Splunk Splunk 6.1.1 Splunk Splunk 6.1.2 Splunk Splunk 6.1.3 Splunk Splunk 6.1.4 Splunk Splunk 6.1.5 Splunk Splunk 6.1.6 Splunk Splunk 6.1.7 Splunk Splunk 6.1.8 Splunk Splunk 6.1.9 Splunk Splunk 6.1.10 Splunk Splunk 6.1.11 Splunk Splunk 6.1.12 Splunk Splunk 6.1.13 Splunk Splunk 6.1.14 Splunk Splunk 6.2.0 Splunk Splunk 6.2.1 Splunk Splunk 6.2.2 Splunk Splunk 6.2.3 Splunk Splunk 6.2.4 Splunk Splunk 6.2.5 Splunk Splunk 6.2.6 Splunk Splunk 6.2.7 Splunk Splunk 6.2.8 Splunk Splunk 6.2.9 Splunk Splunk 6.2.10 Splunk Splunk 6.2.11 Splunk Splunk 6.2.12 Splunk Splunk 6.2.13 Splunk Splunk 6.2.14 Splunk Splunk 6.2.15 Splunk Splunk 6.3.0 Splunk Splunk 6.3.1 Splunk Splunk 6.3.2 Splunk Splunk 6.3.3 Splunk Splunk 6.3.4 Splunk Splunk 6.3.5 Splunk Splunk 6.3.6 Splunk Splunk 6.3.7 Splunk Splunk 6.3.8 Splunk Splunk 6.3.9 Splunk Splunk 6.3.10 Splunk Splunk 6.3.11 Splunk Splunk 6.3.12 Splunk Splunk 6.3.13 Splunk Splunk 6.3.14 Splunk Splunk 6.4.0 Splunk Splunk 6.4.1 Splunk Splunk 6.4.2 Splunk Splunk 6.4.3 Splunk Splunk 6.4.4 Splunk Splunk 6.4.5 Splunk Splunk 6.4.6 Splunk Splunk 6.4.7 Splunk Splunk 6.4.8 Splunk Splunk 6.4.9 Splunk Splunk 6.4.10 Splunk Splunk 6.4.11 Splunk Splunk 6.5.0 Splunk Splunk 6.5.1 Splunk Splunk 6.5.2 Splunk Splunk 6.5.3 Splunk Splunk 6.5.4 Splunk Splunk 6.5.5 Splunk Splunk 6.5.6 Splunk Splunk 6.5.7 Splunk Splunk 6.5.8 Splunk Splunk 6.5.9 Splunk Splunk 6.5.10 Splunk Splunk 6.6.0 Splunk Splunk 6.6.1 Splunk Splunk 6.6.2 Splunk Splunk 6.6.3 Splunk Splunk 6.6.4 Splunk Splunk 6.6.5 Splunk Splunk 6.6.6 Splunk Splunk 6.6.7 Splunk Splunk 6.6.8 Splunk Splunk 6.6.9 Splunk Splunk 6.6.10 Splunk Splunk 6.6.11 Splunk Splunk 6.6.12 Splunk Splunk 7.0.0 Splunk Splunk 7.0.1	251

Common Weakness Enumeration (CWE)

CWE-200 - Information Exposure

Common Attack Pattern Enumeration and Classification (CAPEC)

Subverting Environment Variable Values
The attacker directly or indirectly modifies environment variables used by or controlling the target software. The attacker's goal is to cause the target software to deviate from its expected operation in a manner that benefits the attacker.
Footprinting
An attacker engages in probing and exploration activity to identify constituents and properties of the target. Footprinting is a general term to describe a variety of information gathering techniques, often used by attackers in preparation for some attack. It consists of using tools to learn as much as possible about the composition, configuration, and security mechanisms of the targeted application, system or network. Information that might be collected during a footprinting effort could include open ports, applications and their versions, network topology, and similar information. While footprinting is not intended to be damaging (although certain activities, such as network scans, can sometimes cause disruptions to vulnerable applications inadvertently) it may often pave the way for more damaging attacks.
Exploiting Trust in Client (aka Make the Client Invisible)
An attack of this type exploits a programs' vulnerabilities in client/server communication channel authentication and data integrity. It leverages the implicit trust a server places in the client, or more importantly, that which the server believes is the client. An attacker executes this type of attack by placing themselves in the communication channel between client and server such that communication directly to the server is possible where the server believes it is communicating only with a valid client. There are numerous variations of this type of attack.
Browser Fingerprinting
An attacker carefully crafts small snippets of Java Script to efficiently detect the type of browser the potential victim is using. Many web-based attacks need prior knowledge of the web browser including the version of browser to ensure successful exploitation of a vulnerability. Having this knowledge allows an attacker to target the victim with attacks that specifically exploit known or zero day weaknesses in the type and version of the browser used by the victim. Automating this process via Java Script as a part of the same delivery system used to exploit the browser is considered more efficient as the attacker can supply a browser fingerprinting method and integrate it with exploit code, all contained in Java Script and in response to the same web page request by the browser.
Session Credential Falsification through Prediction
This attack targets predictable session ID in order to gain privileges. The attacker can predict the session ID used during a transaction to perform spoofing and session hijacking.

Exploit-Db

description	Splunk < 7.0.1 - Information Disclosure. CVE-2018-11409. Webapps exploit for Linux platform
file	exploits/linux/webapps/44865.txt
id	EDB-ID:44865
last seen	2018-06-09
modified	2018-06-08
platform	linux
port
published	2018-06-08
reporter	Exploit-DB
source	https://www.exploit-db.com/download/44865/
title	Splunk < 7.0.1 - Information Disclosure
type	webapps

Nessus

NASL family	CGI abuses
NASL id	SPLUNK_CVE_2018-11409_DIRECT.NASL
description	The Splunk installation running on the remote web server is affected by an information disclosure vulnerability at a Splunk REST endpoint. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to disclose potentially sensitive information
last seen	2020-06-01
modified	2020-06-02
plugin id	121164
published	2019-01-14
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/121164
title	Splunk Information Disclosure Vulnerability (SP-CAAAP5E)
code	# # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(121164); script_version("1.4"); script_cvs_date("Date: 2019/10/18 17:08:13"); script_cve_id("CVE-2018-11409"); script_xref(name:"EDB-ID", value:"44865"); script_name(english:"Splunk Information Disclosure Vulnerability (SP-CAAAP5E)"); script_summary(english:"Attempts to exploit an information disclosure vulnerability."); script_set_attribute(attribute:"synopsis", value: "An application running on the remote web server is affected by an information disclosure vulnerability."); script_set_attribute(attribute:"description", value: "The Splunk installation running on the remote web server is affected by an information disclosure vulnerability at a Splunk REST endpoint. An unauthenticated, remote attacker can exploit this, via a specially crafted request, to disclose potentially sensitive information"); # https://www.splunk.com/view/SP-CAAAP5E script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?eaef4f0a"); # https://www.exploit-db.com/exploits/44865 script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?98482484"); script_set_attribute(attribute:"solution", value: "Consult your vendor for a patch or a workaround."); script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N"); script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C"); script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"); script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C"); script_set_attribute(attribute:"cvss_score_source", value:"CVE-2018-11409"); script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available"); script_set_attribute(attribute:"exploit_available", value:"true"); script_set_attribute(attribute:"vuln_publication_date", value:"2018/06/08"); script_set_attribute(attribute:"patch_publication_date", value:"2018/06/18"); script_set_attribute(attribute:"plugin_publication_date", value:"2019/01/14"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk"); script_end_attributes(); script_category(ACT_ATTACK); script_family(english:"CGI abuses"); script_copyright(english:"This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof."); script_dependencies("splunkd_detect.nasl", "splunk_web_detect.nasl"); script_require_ports("Services/www", 8089, 8000); script_require_keys("installed_sw/Splunk"); exit(0); } include('global_settings.inc'); include('webapp_func.inc'); include('http.inc'); include('debug.inc'); app = 'Splunk'; port = get_http_port(default:8000, embedded:TRUE); get_install_from_kb(appname:app, port:port, exit_on_fail:TRUE); req = '/en-US/splunkd/__raw/services/server/info/server-info?output_mode=json'; res = http_send_recv3(method:'GET', item:req, port:port); dbg::log(msg:'Request:\n' + http_last_sent_request() + '\n'); dbg::log(msg:'Response:\nSTATUS:\n' + res[0] + '\nHEADERS:\n' + res[1] + '\nBODY:\n' + res[2] + '\n'); matches = pregmatch(pattern: '"os_name":"(.?)"', string:res[2]); if (!isnull(matches)) os_name = matches[1]; else os_name = ''; matches = pregmatch(pattern: '"os_version":"(.?)"', string:res[2]); if (!isnull(matches)) os_version = matches[1]; else os_version = ''; matches = pregmatch(pattern: '"product_type":"(.?)"', string:res[2]); if (!isnull(matches)) product_type = matches[1]; else product_type = ''; matches = pregmatch(pattern: '"serverName":"(.?)"', string:res[2]); if (!isnull(matches)) server_name = matches[1]; else server_name = ''; matches = pregmatch(pattern: '"version":"(.*?)"', string:res[2]); if (!isnull(matches)) product_version = matches[1]; else product_version = ''; if (!(os_name \| os_version \| product_type \| server_name \| product_version)) audit(AUDIT_LISTEN_NOT_VULN,'Splunk' , port); report = 'Nessus was able to exploit the issue by sending the following request:\n' + req; report += '\n\nThe following information was retrieved:\n'; if (os_name) report += 'OS name: ' + os_name + '\n'; if (os_version) report += 'OS version: ' + os_version + '\n'; if (product_type) report += 'Product type: ' + product_type + '\n'; if (product_version) report += 'Product version: ' + product_version + '\n'; if (server_name) report += 'Server name: ' + server_name + '\n'; security_report_v4(port:port, extra:report, severity:SECURITY_WARNING);

NASL family	CGI abuses
NASL id	SPLUNK_INFORMATION_EXPOSURE_660.NASL
description	According to its self-reported version number, the version of Splunk running on the remote web server is Splunk Enterprise 6.x prior to 6.6.0. Therefore it is affected by an information disclosure vulnerability at a Splunk REST endpoint. An unauthenticated, remote attacker can exploit this via the submission a specially crafted request, to disclose potentially sensitive information about the operating system, hardware and Splunk license.
last seen	2020-06-01
modified	2020-06-02
plugin id	121163
published	2019-01-14
reporter	This script is Copyright (C) 2019 and is owned by Tenable, Inc. or an Affiliate thereof.
source	https://www.tenable.com/plugins/nessus/121163
title	Splunk Information Exposure (SP-CAAAP5E

Packetstorm

data source	https://packetstormsecurity.com/files/download/148111/splunk701-disclose.txt
id	PACKETSTORM:148111
last seen	2018-06-14
published	2018-06-11
reporter	KoF2002
source	https://packetstormsecurity.com/files/148111/Splunk-6.2.3-7.0.1-Information-Disclosure.html
title	Splunk 6.2.3 / 7.0.1 Information Disclosure

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

Exploit-Db

Nessus

Packetstorm

References