Day 1 Enisa Setting Up A Csirt
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Transcript of Day 1 Enisa Setting Up A Csirt
INTODUCTION TO THE CSIRT SETTING UP GUIDE
http://www.enisa.europa.eu/act/cert/support/guide
Agenda
How it all started
What do CERTs do?
How is Incident Response functioning
CERT cooperation
ENISA and CERTs
2
Setting up a CSIRT
Introduction
Overall strategy for planning and setting up a CSIRT
The first section gives a description of what a CSIRT is. It will also provide information about the different environments in which CSIRTs can work and what services they can deliver.
Developing the Business Plan
This section describes the business management approach to the setting-up process.
Promoting the Business Plan
This section deal with the business case and funding issues.
Examples of operational and technical procedures
This section describes the procedure of gaining information and translating it into a security bulletin. This section also provides a description of an incident-handling workflow.
CSIRT training
This section gives a summary of available CSIRT training. For illustration sample course material is provided in the annex.
Producing an advisory
This section contains an exercise on how to carry out one of the basic (or core) CSIRT services: the production of a security bulletin (or advisory).
Description of the Project Plan
This section points to the supplementary project plan (checklist) provided with this guide. This plan aims at being a simple to use tool for the implementation of this guide.
3
The early days of internet
First idea of an Internet in 1960:
"A network of such [computers], connected to one
another by wideband communication lines" which provided "the functions of present-day libraries together with anticipated advances in information storage and retrieval and [other] symbiotic functions. ” by .C.R. Licklider
Beginning of Internet by the Defense Advanced Research Projects Agency (DARPA) in 1981.
4
Map of the TCP/IP test network in January 1982
Today’s Internet
5
First incident on the Internet
2 November 1988: The MORRIS worm
First major outbreak , it spread swiftly around the world
6000 major UNIX machines were infected
(of a total of 60.000 computers connected)
Estimated cost of damage $10M - 100M
Gene Spafford created a mailing list coordinating the first Incident response
6
The First CERT
After incident people realized they
where in need for:
Timely response
Structured and organized approach
Central coordination
This incident in the history of Internet security led directly to the founding of the CERT/CC©
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Europe and CSIRT’s
This model was soon adopted in Europe
1992 Surfnet launched the first CSIRT
in Europe SURFnet-CERT
At present ENISAs inventory of CERT activities in Europe list over 140 CSIRTs
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European CERT activities
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CSIRT abbreviations
CERT© /CERT-CC (Computer Emergency Response Team)
CSIRT (Computer Security Incident Response Team)
IRT (Incident Response Team)
CIRT (Computer Incident Response Team)
SERT (Security Emergency Response Team)
Abuse Team (not a CSIRT)
Is a response facility, usually operated by an ISP, who professionally handles "Internet-abuse" reports or complaints.
10
CSIRT definition
CSIRT
A team that responds to computer security incidents
Providing necessary services to solve orsupporting the resolution of them.
Is trying to prevent any computer security incidents within its constituency or responsibility.
Constituency
Customer base of a CSIRT
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Benefits of having a CSIRT
A dedicated ICT-security team helps to mitigate and prevent major incidents protecting your organization’s valuable assets.
Centralized coordination for ICT-security issues
Specialized organization in handling and responding to ICT-incidents.
Dedicated support available, assisting in taking the appropriate steps and helping the constituent with quick recovery of the ICT infrastructure.
Dealing with legal issues and preserving evidence in the event of a lawsuit.
Educate organization on ICT-security
Stimulating cooperation within the constituency on ICT-security, preventing possible losses.
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What kind of CSIRTS exists
Constituent depended sector CSIRTS In alphabetic order:
National / Governmental Sector
Academic Sector
Commercial
CIP/CIIP Sector
Internal
Military Sector
Small & Medium Enterprises (SME) Sector
Vendor Teams
…
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CSIRT services 1/3
We can distinguish 4 kind of services
Responsive services
1. Reactive services
2. Proactive services
3. Artifact handling
4. Security quality management
14
CSIRT “Core” Services 2/3
Reactive Services
Alerts and Warnings
Incident Handling
Incident analysis
Incident response support
Incident response coordination
Proactive Service
• Announcements
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CSIRT services 3/4
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Reactive services Proactive services Artifact handling
Alerts and Warnings Announcements Artifact analysis
Incident Handling Technology watch Artifact response
Incident analysis Security audits or assessments Artifact response coordination
Incident response support Configuration and maintenance
of security
Security QualityManagement
Incident response coordination Development of Security Tools Risk Analysis
Incident response on site Intrusion Detection Services Business Continuity and Disaster
Recovery
Vulnerability handling Security-Related Information
Dissemination
Security Consulting
Vulnerability analysis Awareness Building
Vulnerability response Education/Training
Vulnerability response
coordination
Product Evaluation or Certification
CSIRT services 4/4
First questions about services:
1. Understand what a CSIRT is an what benefits it might
provide
2. To what sector is the CSIRT delivering it’s services?
3. Decide on the core services of your CSIRT
4. Start preparing your CSIRT,
Organizational, staff, legal, contracts, procedures
Deliver the core services according your standards and
agreements
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Choosing the right approach
1. Define a communication approach to your constituents
2. Define the mission statement
3. Make a realistic implementation/project plan
4. Define your CSIRT services
5. Define the organizational structure
6. Define the Information Security policy
7. Hire the right staff
8. Utilise your CSIRT office
9. Look for cooperation between other CSIRTs and possible national initiatives
18
Analyzing your Constituency
Swot analysis
PEST analysis
19
Example SWOT analysis
Result in delivering the
following Core Services:
Alerts and Warnings
Incident handling
Announcements
20
Communicating channels
Public Website
Closed member area on the Website
Web-forms to report incidents
Mailing lists
Phone
SMS
‘Old fashioned’ paper letters
Monthly or annual reports
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Mission statement
Important to have a mission statement
In communicating your existence to constituents
Communicating it to your staff
Commercial use, elevator pitches, brochures,…
Examples:“<Name of CSIRT> provides information and assistance to its <constituents (define your constituents)> in implementing proactive measures to reduce the risks of computer security incidents as well as responding to such incidents when they occur.”
"To offer support to <Constituents> on the prevention of and response to ICT-related Security Incidents”
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Developing a business plan
Defining a financial model
Cost model
Revenue model
Use of existing resources
Membership fee
Subsidy
23
Costs running a CSIRT
Staff 24x7 or office hours
Housing Normal secured or high secured facility
Equipment
Hosting facilities
Branding material (corporate style)
Brochures
24
Your organizational structure
A CSIRT organization could define the following roles General
General manager
Staff Office manager
Accountant
Communication consultant
Legal consultant
Operational Technical team Technical team leader
Technical CSIRT technicians, delivering the CSIRT services
Researchers
External consultants, Hired when needed
25
Independent business model
26
The embedded model
27
The Campus model
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The voluntary model
Group of people (specialists) that join together in case of emergency.
Loosely fitted
Example WARPS
29
Hiring the right staff ( the hot picks)
Flexible, creative, good teams spirit
Strong analytical skills,
Ability to explain difficult technical matter into easy wording
Good organizational skills and stress durable
Technical knowledge (deep specialist + broad general internet technology knowledge)
Willingness to work 24x7
Loving to do the job! ;)
30
Utilization & equipping the office
Hardening the building
See ISO17799
Maintaining communication channels
Record tracking system(s)
Use the corporate style from the beginning!
Foresee out-of-band communication in case of
attacks
Check redundancy on internet connectivity
and office in case of emergencies
31
Information security policy
Information handling policy
1. How is incoming information "tagged" or
"classified"?
2. How is information handled, especially with
regard to exclusivity?
3. What considerations are adopted for the
disclosure of information "when what?"
especially incident related information passed
on to other teams or to sites?
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Information security policy
4. Are there legal considerations to take into
account with regard to information handling?
5. Do you have a policy on use of cryptography
to shield exclusivity & integrity in archives
and/or data communication, especially e-
mail.
6. This policy must include possible legal
boundary conditions such as key escrow or
enforceability of decryption in case of
lawsuits.
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Information Security policy
National
Laws on information technology
Laws on data protection and privacy
Codes of conduct for corporate governance and IT Governance
European directives
Directives on data protection and electronic communication
International
Basel II, Eu. Convention on Cybercrime
Standards
BS 7799
ISO 27001
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ENISA
National initiatives
TF-CSIRT
WARPS
FIRST
Search for cooperation
35
Promoting your business plan
It visualizes the trends in IT security, especially the decrease in the necessary skills to carry out increasingly sophisticated attacks.
Another point to mention is the continuously shrinking time window between the availability of software updates for vulnerabilities and the starting of attacks against them
36
Promoting your business plan
Viruses Timeline
Patch -> Exploit Spreading rate
Nimda 11 month Code red Days
Slammer 6 month Nimda Hours
Nachi 5 month Slammer Minutes
Blaster 3 weeks
Witty 1 day (!)
37
Business plan & Management
What is the problem?
What would you like to achieve with your constituents?
What happens if you do nothing?
What happens if you take action?
What is it going to cost?
What is going to gain?
When do you start and when is it finished?
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Short wrap-up
How is information handled within your organization
Do you have a Information security policy?
Do you know other CSIRTs?
Could you share incidents that can help the promotion of a CSIRT business plan?
Discuss your potential business plan
39
Operational Procedures
Focus on basic services first!
Alerts and Warnings
Incident handling
Announcements
40
Information process flow
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Information process flow
Information Sources:• Vulnerability information
• Incident reports
• Public and closed sources
for vulnerability information:
- Public and closed mailing lists ! Vendor vulnerability
product information
- Websites
- Information on the Internet
- Public and private partnerships that provide vulnerability information (FIRST, TF- CSIRT, CERT-CC, US-CERT.)
42
Information process flow
Identification Trustworthy source of information Correct information
• Cross checked with other sources
Relevance
Impact to the IT infrastructure of the constituent
Classification of information
Risk assessment & impact analysis
Impact = Risk x potential damage
43
Information process flow
Risk assessment & impact analysis
44
RISK
Is the vulnarabil ity widely known? No, l imited 1 Yes, public 2
Is the vulnarabil ity widely exploited? No 1 Yes 2
Is it easy to exploit the vulnerabil ity? No, hacker 1 Yes, script kiddie 2 11,12 High
Precondition: default configuration? No. specific 1 Yes, standard 2 8,9,10 Medium 0
Precondition: physical access required? Yes 1 No 2 6,7 Low
Precondition: user account required? Yes 1 No 2
Damage
Unauthorized access to data No 0 Yes, read 2 Yes, read + write 4 6 t/m 15 High
DoS No 0 Yes, non-critical 1 Yes, critical 5 2 t/m 5 Medium 0
Permissions No 0 Yes, user 4 Yes, root 6 0,1 Low
OVERALL
High Remote root >> Imediately action needed!
Local root exploit (attacker has a user account on the machine)
Denial of Service
Medium Remote user exploit >> Action within a week
Remote unauthorized access to data
Unauthorized obtaining data
Local unauthorized access to data
Low Local unauthorized obtaining user-rights >> Include it in general process
Local user exploit
Information process flow
Distribution of informationWebsite Email Reports Archiving and research
45
Title of the advisory
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Reference number
ÉÉÉÉÉÉÉÉÉÉÉ
Systems affected
- ÉÉÉÉÉÉÉÉÉÉÉ
- ÉÉÉÉÉÉÉÉÉÉÉ
Related OS + version
ÉÉÉÉÉÉÉÉÉÉÉ
Risk (High-Medium-Low)
ÉÉÉ
Impact/potential damage (High-Medium-Low)
ÉÉÉ
External idÕs: (CVE, Vulnerability bulletin IDÕs) É ÉÉ É
Overview of vulnerability
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉ ÉÉÉÉÉÉÉÉÉÉÉ
Impact
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Solution
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Description (details)
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Appendi x
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
É ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
ÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉÉ
Example of an Advisory
Incident handling process
46
Incident Handling process
1. Receiving incident reports
Phone
Fax
2. Incident Evaluation
Identification
Relevance
Classification
Triage
3. Take action
47
Incident handling process
Actions
Start incident ticket
Essential for solving the incident and communicating
with the involved constituents.
Solve the incident
Preserving any information which may needed for
prosecution takes carefully planned action!
Incident handling report
Archiving
NOTE: Each type of incident calls for different actions!
48
Wrap-up1. Understanding what a CSIRT is.
2. What sector do you deliver your services to?
3. What kinds of services can a CSIRT provide to its constituents?
- Analysis of the environment and constituents
- Defining the mission statement
4. Defining your goals- Defining your Cost model
- Defining the organizational model
- Starting to hire your staff
- Utilizing your office
- Defining the needed Security policy
- Looking for cooperation partners
5. Dealing with matters of project management- Have the business case approved
- Fit everything into a project plan
6. Making the CSIRT operational.- Creating workflows
- Implementing CSIRT tooling
The next step is: training your staff
49
Workflow 2nd example
Producing an advisory
50
Bulletin
Identifier
Microsoft Security Bulletin MS06-042
Bulletin Title Cumulative Security Update for Internet Explorer (918899)
Executive
Summary
This update resolves several vulnerabilities in Internet Explorer that
could allow remote code execution.
Maximum
Severity Rating
C ritical
Impact of
Vulnerability
Remote Code Execution
Affected
Software
Windows, Internet Explorer. For more information, see the Affected
Software and Download Locations sec tion.
Collecting vulnerability
information
Verify the authenticity on vendor website
Gather more details on
The vulnerability
Affected systems
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Workflow 2nd example
Evaluate information
Assess the risk
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RISK
Is the vulnerability well known? Y
Is the vulnerability widespread? Y
Is it easy to exploit the vulnerability?
Y
Is it a remotely exploitable vulnerability?
Y
Damage Remote accessibility and chance of remote code execution. This vulnerability contains multiple issues which make the damage risk HIGH.
Workflow 2nd example
Distribution of information
53
Title of advisory
Multiple vulnerabilities found in Internet explorer
Reference number
082006-1
Systems affected 1. All desktop systems that run Microsoft
Related OS + version Microsoft Windows 2000 Service Pack 4
Microsoft Windows XP Service Pack 1 and Microsoft Windows XP Service Pack 2
Microsoft Windows XP Professional x64 Edition
Microsoft Windows Server 2003 and Microsoft Windows Server 2003 Service Pack 1
Microsoft Windows Server 2003 for Itanium-based Systems and Microsoft Windows Server
2003 with SP1 for Itanium-based Systems
Microsoft Windows Server 2003 x64 Edition
Risk (High-Medium-Low)
HIGH
Impact/potential damage (High-Medium-Low)
HIGH
External idÕs: (CVE, Vulnerability bulletin IDÕs)
MS-06-42
Overview of vulnerability Microsoft has found several critical vulnerabilities in Internet Explorer which can lead too remote
code execution.
Impact An attacker could take complete control over the system, installing programs, adding users and vie,
change or delete data. Mitigating factor is that the above only can take place if the user is logged in
with administrator rights. Users logged on with less rights could be less impacted.
Solution Patch your IE immediately
Description (details) See for more information ms06-042.mspx
Appendi x See for more information ms06-042.mspx
Workflow 2nd example
ENISA and CSIRTs
Mission
Promote and facilitate good practice in setting-up and running of
CSIRTs / WARPs / Abuse Teams / etc.
Encourage cooperation between different actors
Develop relations to the various CERT/CSIRT communities
Support their activities
Run a Working-Group with external experts
How ENISA supports CSIRT community? Promote best practice!
2005: Stocktaking
2006: Setting up &Cooperation
2007: Support OperationQuality Assurance
2008: CERT Exercises
2009:CERT Baseline Capabilities Document
[…]
2009:CERT Exercises Report
http://www.enisa.europa.eu/act/certStay in touch with ENISA!
Contact: Andrea DUFKOVA
Section for Computer Security and Incident Response
ENISA
THANK YOU!