Vulnerabilities > CVE-2013-7394 - Code Injection vulnerability in Splunk

CVSS 9.0 - CRITICAL

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

SINGLE

Confidentiality impact

COMPLETE

Integrity impact

COMPLETE

Availability impact

COMPLETE

network

low complexity

splunk

CWE-94

critical

nessus

NVD

Published: 2014-08-07

Updated: 2014-08-07

Summary

The "runshellscript echo.sh" script in Splunk before 5.0.5 allows remote authenticated users to execute arbitrary commands via a crafted string. NOTE: this issue was SPLIT from CVE-2013-6771 per ADT2 due to different vulnerability types.

Vulnerable Configurations

Part	Description	Count
Application	Splunk Splunk Splunk 5.0 Splunk Splunk 5.0.1 Splunk Splunk 5.0.2 Splunk Splunk 5.0.3 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 5.0.0 Splunk Splunk 5.0.4	93

Common Weakness Enumeration (CWE)

CWE-94 - Improper Control of Generation of Code ('Code Injection')

Common Attack Pattern Enumeration and Classification (CAPEC)

Leverage Executable Code in Non-Executable Files
An attack of this type exploits a system's trust in configuration and resource files, when the executable loads the resource (such as an image file or configuration file) the attacker has modified the file to either execute malicious code directly or manipulate the target process (e.g. application server) to execute based on the malicious configuration parameters. Since systems are increasingly interrelated mashing up resources from local and remote sources the possibility of this attack occurring is high. The attack can be directed at a client system, such as causing buffer overrun through loading seemingly benign image files, as in Microsoft Security Bulletin MS04-028 where specially crafted JPEG files could cause a buffer overrun once loaded into the browser. Another example targets clients reading pdf files. In this case the attacker simply appends javascript to the end of a legitimate url for a pdf (http://www.gnucitizen.org/blog/danger-danger-danger/) http://path/to/pdf/file.pdf#whatever_name_you_want=javascript:your_code_here The client assumes that they are reading a pdf, but the attacker has modified the resource and loaded executable javascript into the client's browser process. The attack can also target server processes. The attacker edits the resource or configuration file, for example a web.xml file used to configure security permissions for a J2EE app server, adding role name "public" grants all users with the public role the ability to use the administration functionality. The server trusts its configuration file to be correct, but when they are manipulated, the attacker gains full control.
Manipulating User-Controlled Variables
This attack targets user controlled variables (DEBUG=1, PHP Globals, and So Forth). An attacker can override environment variables leveraging user-supplied, untrusted query variables directly used on the application server without any data sanitization. In extreme cases, the attacker can change variables controlling the business logic of the application. For instance, in languages like PHP, a number of poorly set default configurations may allow the user to override variables.

Nessus

NASL family	CGI abuses
NASL id	SPLUNK_505.NASL
description	According to its version number, the Splunk Web hosted on the remote web server is affected by multiple code execution vulnerabilities : - A directory traversal vulnerability exists in the collect script. A remote attacker can exploit this, using the
last seen	2020-06-01
modified	2020-06-02
plugin id	70213
published	2013-09-30
reporter	This script is Copyright (C) 2013-2018 Tenable Network Security, Inc.
source	https://www.tenable.com/plugins/nessus/70213
title	Splunk < 5.0.5 Multiple Code Execution Vulnerabilities
code	# # (C) Tenable Network Security, Inc. # include("compat.inc"); if (description) { script_id(70213); script_version("1.13"); script_cvs_date("Date: 2018/11/15 20:50:18"); script_cve_id("CVE-2013-6771", "CVE-2013-7394"); script_bugtraq_id(62632, 69169); script_name(english:"Splunk < 5.0.5 Multiple Code Execution Vulnerabilities"); script_summary(english:"Checks the version of Splunk."); script_set_attribute( attribute:"synopsis", value: "The remote web server contains an application that is affected by multiple code execution vulnerabilities." ); script_set_attribute( attribute:"description", value: "According to its version number, the Splunk Web hosted on the remote web server is affected by multiple code execution vulnerabilities : - A directory traversal vulnerability exists in the collect script. A remote attacker can exploit this, using the 'file' parameter, to execute arbitrary commands. (CVE-2013-6771) - A flaw exists in the 'echo.sh' script that allows a remote, authenticated attacker to execute arbitrary commands on the underlying operating system by using a specially crafted string. (CVE-2013-7394) Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number." ); script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-14-052/"); script_set_attribute(attribute:"see_also", value:"https://www.zerodayinitiative.com/advisories/ZDI-14-053/"); script_set_attribute(attribute:"see_also", value:"https://www.splunk.com/view/SP-CAAAH76"); script_set_attribute(attribute:"see_also", value:"http://docs.splunk.com/Special:SpecialLatestDoc?t=Documentation/Splunk/latest/ReleaseNotes/5.0.5"); script_set_attribute(attribute:"solution", value:"Upgrade to Splunk 5.0.5 or later."); script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C"); script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C"); script_set_attribute(attribute:"exploitability_ease", value:"No exploit is required"); script_set_attribute(attribute:"exploit_available", value:"false"); script_set_attribute(attribute:"vuln_publication_date", value:"2013/09/23"); script_set_attribute(attribute:"patch_publication_date", value:"2013/09/23"); script_set_attribute(attribute:"plugin_publication_date", value:"2013/09/30"); script_set_attribute(attribute:"plugin_type", value:"remote"); script_set_attribute(attribute:"cpe", value:"cpe:/a:splunk:splunk"); script_end_attributes(); script_category(ACT_GATHER_INFO); script_family(english:"CGI abuses"); script_copyright(english:"This script is Copyright (C) 2013-2018 Tenable Network Security, Inc."); 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("audit.inc"); include("global_settings.inc"); include("misc_func.inc"); include("http.inc"); include("install_func.inc"); app = "Splunk"; get_install_count(app_name:app, exit_if_zero:TRUE); port = get_http_port(default:8000, embedded:TRUE); install = get_single_install( app_name : app, port : port, exit_if_unknown_ver : TRUE ); dir = install['path']; ver = install['version']; install_url = build_url(qs:dir, port:port); if (ver_compare(ver:ver,fix:"5.0.5",strict:FALSE) < 0) { if (report_verbosity > 0) { report = '\n URL : ' +install_url+ '\n Installed version : ' +ver+ '\n Fixed version : 5.0.5\n'; security_hole(port:port, extra:report); } else security_hole(port); exit(0); } else audit(AUDIT_WEB_APP_NOT_AFFECTED, app, install_url, ver);

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

Common Attack Pattern Enumeration and Classification (CAPEC)

Nessus

References