National Information Assurance Partnership
Common Criteria Evaluation and Validation Scheme
Validation Report
Splunk 4.1.7
Report Number: CCEVS-VR-VID10437-2011
Version 1.0
March 18, 2011
National Institute of Standards and Technology National Security Agency
Information Technology Laboratory Information Assurance Directorate
100 Bureau Drive 9800 Savage Road STE 6940
Gaithersburg, MD 20899 Fort George G. Meade, MD 20755-6940
®
TM
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Validation Team
National Security Agency
Michelle Brinkmeyer
Lead Validator
The Aerospace Corporation
Jandria Alexander
Senior Validator
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Table of Contents
1 EXECUTIVE SUMMARY................................................................................................................................4
2 EVALUATION DETAILS................................................................................................................................4
2.1 THREATS TO SECURITY..................................................................................................................... 5
3 IDENTIFICATION ...........................................................................................................................................6
4 SECURITY POLICY ........................................................................................................................................6
4.1 IT DATA INDEXING ........................................................................................................................... 6
4.2 SECURITY AUDIT .............................................................................................................................. 6
4.3 IDENTIFICATION AND AUTHENTICATION........................................................................................... 6
4.4 SECURITY MANAGEMENT ................................................................................................................. 7
4.5 PROTECTION OF THE TSF.................................................................................................................. 7
4.6 CRYPTOGRAPHIC SUPPORT ............................................................................................................... 7
4.7 HIGH AVAILABILITY ......................................................................................................................... 7
5 ASSUMPTIONS.................................................................................................................................................7
5.1 CONNECTIVITY ASSUMPTIONS .......................................................................................................... 7
5.2 PERSONNEL ASSUMPTIONS ............................................................................................................... 7
5.3 PHYSICAL ASSUMPTIONS .................................................................................................................. 8
6 CLARIFICATION OF SCOPE........................................................................................................................8
6.1 SYSTEM REQUIREMENTS................................................................................................................... 8
7 ARCHITECTURAL INFORMATION ...........................................................................................................9
7.1 TOE COMPONENTS..........................................................................................................................10
7.1.1 Splunk Web ............................................................................................................................10
7.1.2 Splunk CLI.............................................................................................................................10
7.1.3 Splunkd ..................................................................................................................................10
8 DOCUMENTATION.......................................................................................................................................10
9 TOE ACQUISITION.......................................................................................................................................12
10 IT PRODUCT TESTING................................................................................................................................12
10.1 FUNCTIONAL TESTING.................................................................................................................12
10.1.1 Functional Test Methodology ...........................................................................................12
10.1.2 Functional Test Results.....................................................................................................13
10.2 VULNERABILITY TESTING ...........................................................................................................13
10.2.1 Vulnerability Test Methodology........................................................................................13
10.2.2 Vulnerability Test Results .................................................................................................15
11 RESULTS OF THE EVALUATION .............................................................................................................15
12 VALIDATOR COMMENTS/RECOMMENDATIONS...............................................................................16
12.1 CRYPTOGRAPHY IS VENDOR ASSERTED......................................................................................16
13 SECURITY TARGET.....................................................................................................................................16
14 LIST OF ACRONYMS ...................................................................................................................................16
15 TERMINOLOGY ............................................................................................................................................17
16 BIBLIOGRAPHY............................................................................................................................................18
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1 Executive Summary
The Target of Evaluation (TOE) is Splunk 4.1.7. The TOE was evaluated by the Booz
Allen Hamilton Common Criteria Test Laboratory (CCTL) in the United States and was
completed in March 2011. The evaluation was conducted in accordance with the
requirements of the Common Criteria, Version 3.1 Revision 3 and the Common
Methodology for IT Security Evaluation (CEM), Version 3.1 Revision 3. The evaluation
was for Evaluation Assurance Level 2 (EAL2) augmented with ALC_FLR.1 (Basic Flaw
Remediation). The evaluation was consistent with National Information Assurance
Partnership (NIAP) Common Criteria Evaluation and Validation Scheme (CCEVS)
policies and practices as described on their web site (www.niap.ccevs.org).
Splunk collects IT data logs from various configured machines, stores the logs on disk,
and indexes the data it collects. Splunk features search functionality to query these logs at
based on user requests. Multiple instances of the Splunk process can be utilized in
synchronization to optimize the functionality, with different Splunk processes focusing
on collecting and forwarding IT data, storing and indexing IT data, and searching IT data
and providing a collaborative user interface.
The Splunk product, when configured as specified in the Installation Guides and User
Guides, satisfies all of the security functional requirements stated in the TOE’s Security
Target.
The cryptography used in this product has not been FIPS-certified, nor has it been
analyzed or tested to conform to cryptographic standards during this evaluation. All
cryptography has only been asserted as tested by the vendor.
The technical information included in this report was largely derived from the Evaluation
Technical Report and associated test reports produced by the evaluation team. The
Splunk 4.1.7 Security Target version 2.0, dated 1 February 2011 identifies the specific
version and build of the evaluated TOE. This Validation Report applies only to that ST
and is not an endorsement of the Splunk product by any agency of the US Government
and no warranty of the product is either expressed or implied.
2 Evaluation Details
Evaluated Product
Splunk 4.1.7
Sponsor & Developer Splunk, San Francisco, CA
CCTL Booz Allen Hamilton,
Linthicum, Maryland
Completion Date March 2011
CC Common Criteria for
Information Technology
Security Evaluation, Version
3.1 Revision 3, July 2009
Interpretations None.
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CEM Common Methodology for
Information Technology
Security Evaluation, Version
3.1 Revision 3, July 2009
Evaluation Class EAL2 Augmented ALC_FLR.1
Description The TOE is the Splunk product,
which is a security software
product developed by Splunk,
Inc. as a Security Management
product.
Disclaimer The information contained in
this Validation Report is not an
endorsement of the Splunk
product by any agency of the
U.S. Government, and no
warranty of the Security
Management product is either
expressed or implied.
PP None
Evaluation Personnel Seyithan Ayhan
Christopher Gugel
Kevin Micciche
Derek Scheer
John Schroeder
Amit Sharma
Validation Body NIAP CCEVS
Jandria Alexander
Michelle Brinkmeyer
2.1 Threats to Security
Table 2 summarizes the threats that the evaluated product addresses.
Table 2 – Threats
A legitimate user of the TOE could gain unauthorized access to resources or information
protected by the TOE, or performs operations for which no access rights have been granted, via
user error, system error, or other actions.
An administrator may incorrectly install or configure the TOE, or install a corrupted TOE
resulting in ineffective security mechanisms.
A malicious user or process may view audit records and/or IT data, cause the records or
information to be lost or modified, or prevent future audit records and IT data from being
recorded, thus masking a user’s action.
A malicious user could eavesdrop on network traffic to gain unauthorized access to TOE data.
A malicious user may attempt to communicate with the TOE's interfaces in ways that exploit
flaws, subvert the TOE, or defeat the operation of its security mechanisms.
Users whether they be malicious or non-malicious, could gain unauthorized access to the TOE by
bypassing identification and authentication countermeasures.
Users of an IT product the TOE monitors may perform undesirable actions using the IT product
in question, whether by performing malicious actions upon the product, by utilizing functions
within the IT product that adversely affect the system it interacts with, or by altering the
configuration to be insecure.
A malicious user or process could perform suspicious activities against the TOE or objects in the
Operational Environment monitored by the TOE without a TOE user authorized by the
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Operational Environment becoming aware of this behavior.
3 Identification
The product being evaluated is Splunk 4.1.7.
4 Security Policy
4.1 IT Data Indexing
The TOE is able to collect and index IT data from the following log sources: Windows
event logs, UDP and TCP syslog, Active Directory, generic scripted inputs, local disk
logs, file system changes, and Windows registry changes. Each IT data event has at least
the date/time of the event, source, source type, and host name. Only authorized users are
able to read the indexed IT data by performing searches on the TOE. Authorized users are
able to use the search functionality to search indexed audit logs based upon the data
collected during indexing. All IT data logs indexed are protected from deletion or
modification. In the evaluated configuration, the TOE is configured to stop indexing and
begin to overwrite the oldest IT data records when storage reaches the configured limit,
which is synonymous with the storage being full. The TOE also sends an alarm in the
form of a user interface banner. In addition, the most recent stored IT records are
maintained if storage runs out.
4.2 Security Audit
The TOE collects audit logs on TOE startup and shutdown, user login, and any user
action on the system, including editing users and configuration. A timestamp is provided,
as well as the user who performed the action (if applicable), the action itself, and a
success or failure determination. Only authorized users are able to read this audit
information by performing searches. The audit data collected is added to the index and is
read in the same manner as IT data. The search functionality in the TOE allows
authorized users the ability to read audit data to sort and filter the audit data returned to
them based upon date/time of the event, type of event, subject identity, and outcome of
the event, along with any other search parameters entered. All audit data logs are
protected from deletion or modification. The most recent stored audit records are
maintained if storage runs out.
4.3 Identification and Authentication
The TOE provides user accounts that have the following attributes: username, password,
and roles. All users must successfully identify and authenticate themselves utilizing their
username and password combination before they can make any TSF-related actions.
There are two authentication mechanisms utilized in the TOE: Splunk authentication and
LDAP authentication. Authorized users are able to select the authentication method used
within the configuration options of the TOE. Upon authentication, users are bound to
their role and other user attributes within a session object. A user session is terminated if
the user is deleted or if all roles have been removed for the user. In addition, sessions will
be terminated due to inactivity.
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4.4 Security Management
The security management of the TOE is controlled by user actions that are authorized by
the TOE’s RBAC policy. Every function within the system, along with the objects it
affects, is controlled by specific capabilities, indexes, or ACLs (Access Control Lists)
available to the user performing the action. The security attributes are edited and assigned
using this same RBAC policy. The primary security attributes within the system are roles.
The default roles in the system are the following: admin, power, user, and can_delete.
Additional roles can be generated by authorized users. One or more roles must be
assigned to a user before the user can perform any TSF-related action on the TOE.
4.5 Protection of the TSF
The TOE utilizes OpenSSL to prevent unauthorized disclosure of data and detect
modification of TSF data sent to the LDAP store. Detected modifications of TSF data
will result in the packet being dropped. Additionally, OpenSSL is utilized to protect data
being transferred between TOE components. OpenSSL is also used to create a logically
distinct trusted path between remote users and the TOE, and will protect the TSF data in
transit from unauthorized modification or disclosure. Remote users initiate the trusted
path to the TOE. The trusted path is required to be used for user authentication,
management actions, and data transfer.
4.6 Cryptographic Support
The TOE utilizes OpenSSL packages to generate cryptographic keys utilizing the RSA
algorithm with 1024-bit keys. The TOE will overwrite old keys whenever a new key is
generated. All sensitive interfaces are protected utilizing these encryption standards,
including the user interface connections, connections between TOE components in the
deployment, and the optional LDAP server.
4.7 High Availability
The TOE also provides mechanisms for high availability. The TOE will maintain a secure
state whenever an indexer fails. The TOE will also ensure that the indexing functionality
of the product will still operate if a single indexer fails.
5 Assumptions
5.1 Connectivity Assumptions
Table 1 – Connectivity Assumptions
5.2 Personnel Assumptions
Table 2– Personnel Assumptions
The security features offered by the Operational Environment protect the files used by
the TOE.
The network which the TOE is monitoring is expected to be secure to protect the
transfer of data from remote data sources and email messages sent to the SMTP Server.
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One or more authorized administrators are assigned to install, configure and manage the
TOE and the security of the information it contains.
Users of the TOE are not careless, wilfully negligent, or hostile and will follow and
abide by the instructions provided by the organization’s guidance documentation
System Administrators exercise due diligence to update the TOE with the latest
patches and patch the Operational (e.g., OS and database) so they are not susceptible to
network attacks.
5.3 Physical Assumptions
Table 3 – Physical Assumptions
The TOE will be located within controlled access facilities that will prevent
unauthorized physical access.
6 Clarification of Scope
The TOE includes all the code that enforces the policies identified (see Section 4).
The evaluated configuration of the TOE includes the Splunk 4.1.7 product that is
comprised of the following:
 Splunk Web
 Splunk CLI
 Splunkd
6.1 System Requirements
The following components are recommended to run the TOE on the listed platforms:
Windows 7 (64 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
RAM 8 GB
Windows XP (32 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
RAM 8 GB
Windows Server 2008 R2 (64 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
RAM 8 GB
Windows Server 2003 (64 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
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RAM 8 GB
Solaris 10 (64 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
RAM 8 GB
Red Hat 5.3 (64 bit)
Processor 2x quad-core Xeon or equivalent at 3 Ghz
Disk space 200 GB
RAM 8 GB
7 Architectural Information
The TOE’s boundary has been defined in Figure 1, while Figure 2 shows a potential
deployment of Splunk.
Indexes
Splunkd
Splunk Web
Index 1 Index 2 etc.
Job
SSL
Data
Sources
SSL
Splunk CLI
LDAP
Store
ACLs
SSL SSL
Command Line
Web Browser
Session
Files
SMTP
Server
TOE Subsystem
Environment Object
O/S
Environment O/S
Legend
Figure 1 – TOE Boundary for Splunk 4.1.7
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Splunkd
Forwarder 1
Splunkd
Forwarder 2
Splunkd
Indexer 1
Splunkd
Indexer 2
Splunkd
Search-head
Splunk
Web
Splunk
CLI
Data
Sources
Splunkd
Indexer 3
Deployment
Server
Figure 2 – TOE Deployment
7.1 TOE Components
7.1.1 Splunk Web
Python and browser-based interface that uses OpenSSL functionality and allows users to
perform all management and searching functions on the TOE deployment. This
subsystem is only utilized with the Splunkd process designated as the search-head.
7.1.2 Splunk CLI
Command-line interface that uses OpenSSL functionality and allows users to perform
most management and searching functions on the TOE deployment. This subsystem is
only utilized with the Splunkd process designated as the search-head.
7.1.3 Splunkd
Process that contains most of the Splunk primary functionality. This process contains
modules to receive data, forward data, and index data. In addition, when searches are
performed, this process performs the search on its configured indexes and returns the
results to the search-head. In addition, scheduled searches can be configured by users.
This process also contains a web server, handles all authentication and authorization
needs, and can be configured to be a deployment server for configuration updates.
8 Documentation
These are public facing documents that were evaluated to satisfy assurance requirements:
Component Document(s) Rationale
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Component Document(s) Rationale
AGD_OPE.1
Operational User Guidance
 Splunk Admin Manual Version:
4.1.7
 Splunk Application
Management Version: 4.1.7
 Splunk Developer Manual
Version: 4.1.7
 Splunk Installation Manual
Version: 4.1.7
 Splunk Knowledge Manager
Manual Version: 4.1.7
 Splunk Release Notes Version:
4.1.7
 Splunk Search Reference
Version: 4.1.7
 Splunk User Manual Version:
4.1.7
These documents describe the
operational user guidance for
the TOE.
AGD_PRE.1
Preparative Procedures
 Splunk Admin Manual Version:
4.1.7
 Splunk Application
Management Version: 4.1.7
 Splunk Developer Manual
Version: 4.1.7
 Splunk Installation Manual
Version: 4.1.7
 Splunk Knowledge Manager
Manual Version: 4.1.7
 Splunk Release Notes Version:
4.1.7
 Splunk Search Reference
Version: 4.1.7
 Splunk User Manual Version:
4.1.7
This document describes the
preparative procedures that need
to be done prior to installing the
TOE.
ASE_CCL.1
Conformance Claims
Splunk 4.1.7 Security Target 2.0 This document describes the CC
conformance claims made by
the TOE.
ASE_ECD.1
Extended Components
Definition
Splunk 4.1.7 Security Target 2.0 This document provides a
definition for all extended
components in the TOE.
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Component Document(s) Rationale
ASE_INT.1
Security Target Introduction
Splunk 4.1.7 Security Target 2.0 This document describes the
Introduction of the Security
Target.
ASE_OBJ.2
Security Objectives
Splunk 4.1.7 Security Target 2.0 This document describes all of
the security objectives for the
TOE.
ASE_REQ.2
Derived Security
Requirements
Splunk 4.1.7 Security Target 2.0 This document describes all of
the security requirements for the
TOE.
ASE_SPD.1
Security Problem Definition
Splunk 4.1.7 Security Target 2.0 This document describes the
security problem definition of
the Security Target.
ASE_TSS.1
TOE Summary Specification
Splunk 4.1.7 Security Target 2.0 This document describes the
TSS section of the Security
Target.
Table 8 – Assurance Documents Evidence
9 TOE Acquisition
The NIAP-certified Splunk product is acquired via normal sales channels, and
electronic delivery of the TOE is coordinated with the end customer by Splunk, Inc.
10 IT Product Testing
10.1 Functional Testing
10.1.1 Functional Test Methodology
The test team's test approach is to test the security mechanisms of the Splunk 4.1.7 by
exercising the external interfaces to the TOE and viewing the TOE behavior on the
platform. Each TOE external interface was described in the relevant design
documentation (e.g., FSP) in terms of the relevant claims on the TOE that can be tested
through the external interface. The ST, TOE Design (TDS), Functional Specification
(FSP), Security Architecture (ARC) and the vendor's test plans were used to demonstrate
test coverage of all EAL2 requirements for all security relevant TOE external interfaces.
TOE external interfaces that were determined to be security relevant are interfaces that
 change the security state of the product,
 permit an object access or information flow that is regulated by the security
policy,
 are restricted to subjects with privilege or behave differently when executed by
subjects with privilege, or
 invoke or configure a security mechanism.
Security functional requirements are associated with interfaces if the behavior of the TOE
that supported the requirement could be invoked or observed through that interface. ri
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10.1.2 Functional Test Results
During the course of the evaluation, the Booz Allen evaluation team reviewed the
vendor’s functional testing and determined that all security relevant TOE external
interfaces were tested and all of the claimed TSF functionality was tested by the vendor.
The evaluation team then created a test plan that contained a sample of the vendor
functional test suite, and supplemental functional testing developed by the evaluators.
The evaluators test suite emphasized on the product’s primary TSF functionality, and
additional regression testing. The vendor and evaluator testing efforts performed both
positive and negative testing of the Security Functional Requirements. The testing efforts
ensured consistent results of TOE functionality performed on all Operating Systems
included in the evaluation, and also verified that the TOE can perform in a heterogeneous
environment where the TOE is installed across multiple Operating Systems in a TOE
deployment (see Figure 2). Based upon the results of the vendor and evaluator testing; it
has been determined that the product functionally operates as described.
10.2 Vulnerability Testing
10.2.1 Vulnerability Test Methodology
The evaluation team created a set of vulnerability tests to attempt to subvert the security
of the TOE. These tests were created based upon the evaluation team's review of the
vulnerability analysis evidence and independent research. The Evaluation Team
conducted searches for public vulnerabilities related to the TOE. A few notable resources
consulted include securityfocus.com, the cve.mitre.org, and the nvd.nist.gov.
Upon the completion of the vulnerability analysis research, the team had identified
several generic vulnerabilities upon which to build a test suite. These tests were created
specifically with the intent of exploiting these vulnerabilities within the TOE or its
configuration.
The team tested the following areas:
 Eavesdropping on Communications
In this test, the evaluators manually inspected network traffic to and from the
TOE in order to ensure that no useful or confidential information could be
obtained by a malicious user on the network.
 Port Scanning
Remote access to the TOE should be limited to the standard TOE interfaces and
procedures. This test attempted to find ways to bypass these standard interfaces
of the TOE and open any other vectors of attack.
 Vulnerability Scanner (Nessus)
This test used the Nessus Vulnerability scanner to test any and all open interfaces
on any applicable systems of the TOE. The scanner probes a wide range of
vulnerabilities that includes but is not limited to the following:
Backdoors
CGI abuses
Denial of Service
Gain root remotely
General
Miscellaneous
RPC
Settings
SMTP Problems
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Finger abuses
Firewalls
FTP
Gain a shell remotely
Netware
NIS
Port scanners
Remote file access
SNMP
Untested
Useless services
 Unauthenticated Access / Directory Traversal Attack
This test used “URL hacking” to attempt to access protected TOE resources by
injecting unexpected input into requests that were sent to the TOE. This was done
using two different approaches to URL exploitation.
o The first part attempted to access protected TOE resources as an
unauthenticated outsider.
o The second part attempted to access local TOE resources that should be
protected from any remote access (unauthenticated and authenticated).
 SQL Injection / Cross Site Scripting Attack / Cross Site Request Forgery
This test executed automated SQL Injection and Cross Site Scripting attacks
against the TOE. The evaluators determined any fields or variables that could be
prone to attack. They then used a scanner, which contained a large database of
standard strings that are used for testing SQL Injection and Cross Site Scripting
issues. These strings were input into the various fields and variables and the
output was analyzed for inconsistencies.
 Web Server Vulnerability Scanner (Nikto)
This test used the Nikto web server vulnerability scanner to test for any known
vulnerabilities that could be present in the TOE’s web interfaces. This scanner
probed a wide range of vulnerabilities that included the following:
File Upload.
Interesting File / Seen in logs.
Misconfiguration / Default File.
Information Disclosure.
Injection (XSS/Script/HTML).
Remote File Retrieval
Denial of Service.
Command Execution / Remote Shell.
SQL Injection.
Authentication Bypass.
Software Identification
Remote source inclusion.
 Vulnerability Scanner (Retina)
This test used the Retina Vulnerability scanner to test any and all open interfaces
on any applicable systems of the TOE.
The scanner probed a wide range of vulnerabilities that included but was not
limited to the following:
Accounts
Anti-Virus
Backdoors
CGI Scripts
Database Issues
DoS
IP Services
Registry
Remote Access
RPC Services
Service Control
Spyware
Web Services
CVE Issues
SecurityFocus BID
Issues
 Data Source Injection Attack
The TOE takes data from outside data sources and presents that data to TOE users
in a web application. This test attempted to inject malicious data into the data
source and ensure that the TOE properly escapes that data before presenting it
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over the web interface. If a malicious user were able to inject Java Script into the
data source and have it presented un-escaped to a browser, a cross site scripting
attack could be possible.
 Syslog Spoofing
In this test, the attacker attempted to spoof syslog messages from one of the data
sources configured in the TOE.
10.2.2 Vulnerability Test Results
The following lists any issues that were discovered as a result of the vulnerability testing
process. These issues have been broken up into the following categories:
10.2.2.1 Additional Guidance for Security
 Default Web Server Uses HTTP
The default installation of Splunk automatically sets the web server to communicate
through unencrypted HTTP. This is insecure as it would allow communication
between the user and the Splunk Web to be sniffed by an untrusted party and leak
information. The TOE only communicates via HTTP or HTTPS, but not both. The
user guidance details how to configure the TOE to use HTTPS.
10.2.2.2 Informational Notes
 Log Message Spoofing and Interception
Log messages are collected using syslog. The syslog protocol can be transmitted over
TCP or UDP and is unencrypted on the network. This means that any syslog message
could potentially be sniffed by an untrusted party and leak information prior to the
syslog message being received by the TOE. In addition, syslog messages have no
authentication of either the client or the server. Therefore messages can be forged
that appear to come from a valid source and contain false information. The
administrator should be aware of these facts and should not rely on the confidentiality
or integrity of the collected IT data.
 Use of Valid Certificates
All implementations of SSL in use by the product should be configured using valid
certificates signed by a trusted certificate authority. The use of self-signed
certificates could expose users to Man-In-the-Middle attacks resulting in credential
theft.
11 Results of the Evaluation
The evaluation was carried out in accordance with the Common Criteria Evaluation and
Validation Scheme (CCEVS) process and scheme. The evaluation demonstrated that the
Splunk 4.1.7 TOE meets the security requirements contained in the Security Target.
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The criteria against which the Splunk TOE was judged are described in the Common
Criteria for Information Technology Security Evaluation, Version 3.1 Revision 3, July
2009. The evaluation methodology used by the evaluation team to conduct the evaluation
is the Common Methodology for Information Technology Security Evaluation, Version
3.1 Revision 3, July 2009. The Booz Allen Hamilton Common Criteria Test Laboratory
determined that the evaluation assurance level (EAL) for the Splunk 4.1.7 TOE is EAL2
augmented with ALC_FLR.1. The TOE, configured as specified in the installation guide,
satisfies all of the security functional requirements stated in the Security Target.
The evaluation was completed in March 2011. Results of the evaluation and associated
validation can be found in the Common Criteria Evaluation and Validation Scheme
Validation Report.
12 Validator Comments/Recommendations
12.1 Cryptography is Vendor Asserted
The cryptography used in this product has not been FIPS-certified, nor has it been
analyzed or tested to conform to cryptographic standards during this evaluation. All
cryptography has only been asserted as tested by the vendor. Users of the need to ensure
that the data sources sent to the TOE are protected either as part of the environment or
with SSL in the evaluated configuration. The Administrative guidance identifies those
interfaces that use SSL and those that do not.
13 Security Target
The security target for this product’s evaluation is Splunk 4.1.7 Security Target, Version
2.0, 1 February 2011.
14 List of Acronyms
Acronym Definition
AD Active Directory
ACL Access Control List
CA Certificate Authority
CC Common Criteria
CCEVS
Common Criteria Evaluation and Validation
Scheme
CCIMB
Common Criteria Interpretations Management
Board
CLI Command-line Interface
CPU Central Processing Unit
EAL Evaluation Assurance Level
GUI Graphical User Interface
HTTP Hypertext Transfer Protocol
HTTPS Hypertext Transfer Protocol Secure
IP Internet Protocol
IT Information Technology
LDAP Lightweight Directory Access Protocol
NIAP National Information Assurance Partnership
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OS Operating System
PP Protection Profile
RAID Redundant Array of Independent Disks
RBAC Role Based Access Control
SAR Security Assurance Requirement
SFR Security Functional Requirement
SMTP Simple Mail Transfer Protocol
SSL Secure Sockets Layer
ST Security Target
TCP Transmission Control Protocol
TOE Target of Evaluation
TSF TOE Security Function
UDP User Datagram Protocol
UI User Interface
URL Uniform Resource Locator
X.509 X.500 Series Standard for Public-key and
Attribute and Certificate Frameworks
15 Terminology
Terminology Definition
Access Control Lists The owner of each created object specifies the read/write access available to
each role within the system. Obviously, the owner of an object has
unrestricted access to the objects it controls.
Authorized User A user that has been assigned a role with the attributes that allow an action
on an object as defined in Table 7-3. This essentially means “any user that is
capable of performing the action in question.”
Capability An action in the TOE that can be added to a role to grant the role the ability
to perform said action.
Deployment Client This refers to all Splunkd processes that are sent configuration updates by
the Deployment Server.
Deployment Server An instance of the Splunkd process that is configured solely to deploy
configuration updates to the other Splunkd processes within the TOE
deployment.
Forwarder An instance of the Splunkd process that is configured solely to collect raw
IT data logs, parse them, formulate indexed logs, and then forward both the
raw data and the indexed logs to another configured Splunkd process.
Index When used as a verb, this refers to the actual process of parsing raw data
logs, extracting fields, and storing the parsed data. When used as a noun,
this refers to where said parsed data is stored upon Splunkd processes
configured as indexers.
Indexed Data This refers to parsed IT data that is stored in an indexer.
Indexer An instance of the Splunkd process that is configured to collect parsed data
logs as well as raw data logs from a forwarder and to store said data.
IT Data All data that the TOE collects and indexes.
Parsing Specifically to Splunk, this is the act of utilizing Splunk’s indexing
functionality to process raw data and extract specific default and user-
defined fields. The output of this process is indexed data.
Raw Data Unprocessed IT data the TOE collects from any configured source.
Receiver Any Splunkd process that receives data from one or more forwarders.
Role A named bundle of capabilities and allowed indexes that determines the
amount of access specific users are allowed within the TOE. There are
defaults, but additional roles can be user-generated. Roles are assigned to
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users.
Search-head An instance of the Splunkd process that is configured solely to be the
primary component for searching. It is also the only Splunkd process within
the evaluated configuration to interface with users via the Splunk Web and
Splunk CLI processes. This means that most of the general TOE
management is utilized through this process exclusively.
Server Class A deployment configuration shared by a group of deployment clients. A
deployment client can belong to multiple server classes.
Splunk Object A Splunk object is an object within the system that has an ACL defined for
it.
16 Bibliography
1. Common Criteria for Information Technology Security Evaluation – Part 1:
Introduction and general model, Version 3.1 Revision 3.
2. Common Criteria for Information Technology Security Evaluation – Part 2:
Security functional requirements, Version 3.1 Revision 3.
3. Common Criteria for Information Technology Security Evaluation – Part 3:
Security assurance requirements, Version 3.1 Revision 3.
4. Common Evaluation Methodology for Information Technology Security
Evaluation, Version 3.1 Revision 3.
5. Splunk 4.1.7 Security Target, Version 2.0, February 1, 2011
6. Evaluation Technical Report for a Target of Evaluation “Splunk 4.1.7” Evaluation
Technical Report v3.0 dated 7 February 2011.