Reduce Security Compliance Costs Using Open Source

Transcription

1 BLUE KAIZEN CENTER OF IT SECURITY Cairo Security Camp 2010 Reduce Security Compliance Costs Using Open Source Subject : This document gives the user an introduction to Information Security Compliance, Why Comply?, Compliance Costs, Open Source Definition, Why Consider Open Source?, Open Source Software useful for Security Compliance, Open Source References and Case Study, Facing Open Source Challenges and Open Source Software Selection Criteria. Author : Mostafa Ibrahim Version : 1.0 Date : July, 2010 Nb pages : 53

2 Reduce Security Compliance Costs Using Open Source Mostafa Ibrahim Security Meter CTO CISA, ISO LA, RHCE

3 AGENDA Information Security Compliance Why Comply? Compliance Costs Open Source Definition Why Consider Open Source? Open Source Software useful for Security Compliance 3

4 AGENDA Open Source References and Case Study Facing Open Source Challenges Open Source Software Selection Criteria Conclusion 4

5 AGENDA 1 Information Security Compliance 5

6 Information Security Compliance Forcing companies to put their infrastructure in order In many cases face stiff penalties if dead line are not met Prescribe Policies and Procedures that > Cover minimum standards for use of IT equipment, > Cover definitions of misuse > Cover rules for enforcing the standards that have been set. > Protect the company's IT equipment, data, and other assets. > Include security and other business policies 6

7 Standards vs Regulations Standards: Issued by national or international bodies e.g. BSI, ISO. Codes of practice (e.g. ISO 27001, ISO 9001, ISO 20000) Sanctions: none Regulations: Issued by government agencies, markets or sectoral bodies Gov. Agencies e.g. FISMA for U.S. federal government agency Markets Sectorals e.g. Basel II for Banks, HIPAA for Health Care / Insurance, PCI-DSS for Payment Card Industry, SOX for American Public Companies. Sanctions: fines, loss of ability to do business 7

8 AGENDA 2 Why Comply? 8

9 Why Comply? Helps management: You can t manage what you can t measure Enables benchmarking internally and with others Builds trust with partners and customers Enables trend analysis: Are things getting better or worse? Audits usually increases visibility on business processes and IT infrastructure Avoid losing business because of being non compliant Avoid being penalized for Noncompliance 9

10 Why Comply? TJX Scandal One of the biggest retailers dealing with more than 60 banks Considered to be the largest data breach ever. At least 94 million Visa and MasterCard accounts may have been exposed The company reported a spend of $202 million in response to the breach Wireless Security Issue in one of its remote branches Heartland Data Breach One of the largest processors of credit and debit card transactions in the U.S Estimates of more than 100 million accounts may have been exposed Planting a malware capable of sniffing out payment card data as it moved across the company's network, and then to have spirited it out of Heartland's systems in encrypted data streams. 10

11 Path to Compliance 1. Determine the scope precisely (In terms of assets and business processes) 2. Reduce scope by segmenting the network 3. Baseline your environment against the standard to identify gaps. 4. For all gaps determine remediation actions with associated effort. 5. Develop a prioritized plan to address gaps. 6. Execute ( but with management support). 11

12 AGENDA 3 Compliance Costs 12

13 Cost of Compliance U.S. public companies are spending $4.36 million each, on average, to comply with Section 404 of Sarbanes- Oxley (March 2005 survey conducted by Financial Executives International). Entities are typically spending between at $2 and $8 million each to comply with PCI-DSS. (From our experience in the region) Security Compliance is very expensive 13

14 AGENDA 4 Open Source Definition 14

15 What exactly Open Source Software? Open Source Definition Open Source is about granting users the freedom to run, copy, distribute, study, change and improve the software. OSS is any software that provided the following freedoms. The freedom to: Run the program, for any purpose (freedom 0) Study how the program works, and adapt it to your needs (freedom 1). Redistribute copies so you can help your neighbor (freedom 2) Improve the program, and release your improvements to the public, so that the whole community benefits (freedom 3). The OSS makes sure that software and their derivative works stay free through adequate license obligations. 15

16 Open Source vs. Other Types Closed Source The source is private and owned by someone. Usually you d have to pay for the source code if its even for sale. Freeware Free software. It has nothing to do with the source code being available or not. Source Available The source is available to look at, but not modify or distribute. Allows users to understand how the software is working. 16

17 AGENDA 5 Why Consider Open Source? 17

18 Why Consider Open Source? Avoid Vendor Lock In Open Source allows for many people to find and fix security or efficiency problems Ease of Customization Deep Understanding for underlying Technology Lower TCO (No License Cost) 18

19 AGENDA 6 Open Source Software useful for Security Compliance 19

20 20 Open Source Software Useful for Security Compliance Firewall Network IDS / IPS File Integrity Monitoring / HIDS Web Application Firewall Log Management Encryption (at Rest, Motion) Change Management Vulnerability Scanning Penetration Testing Business Continuity Alerting System Configuration Management Database Monitoring

21 Firewall PCI-DSS Requirement 1: Install and maintain a firewall configuration to protect cardholder data ISO 27k A Networks shall be adequately managed and controlled, in order to be protected from threats, and to maintain security for the systems and applications using the network, including information in transit. 21

22 Open Source Firewalls Netfilter / Iptables Endian Firewall ClearOS Zeroshell 22

23 IDS / IPS PCI-DSS Requirement 11.4 Use intrusion-detection systems, and/or intrusion-prevention systems to monitor all traffic ISO 27k A Networks shall be adequately managed and controlled, in order to be protected from threats, and to maintain security for the systems and applications using the network, including information in transit. 23

24 Snort Open Source IDS / IPS Snort has become the de facto standard for IPS Base Basic Analysis and Search Engine Web Interface for Snort providing a reporting, analysis capabilities to Snort Sguil intuitive GUI that provides access to realtime events, session data, and raw packet capture 24

25 HIDS / File Integrity Monitoring PCI-DSS Requirement 11.5 Deploy file-integrity monitoring software to alert personnel to unauthorized modification of critical system files, configuration files, or content files; and configure the software to perform critical file comparisons at least weekly. ISO 27k A.10.4 Protection against malicious and mobile code Objective: To protect the integrity of software and information. 25

26 Open Source HIDS / File Integrity Monitoring OSSEC Runs on almost all popular OS Linux, MacOS, Solaris, HP-UX, AIX and Windows. Has its own web interface Samhain Osiris Beltane is an intuitive Web Interface for Samhain

27 Web Application Firewall PCI-DSS Requirement 6.6 For public-facing web applications, address new threats and vulnerabilities on an ongoing basis and ensure these applications are protected against known attacks by Installing a web-application firewall in front of public-facing web applications 27

28 Open Source Web Application Firewall ModSecurity The most widely used Web Application Firewall Over 10,000 deployment 28

29 PCI-DSS Log Management Requirement 10.2 Implement automated audit trails for all system components Use file-integrity monitoring or change-detection software on logs to ensure that existing log data cannot be changed without generating alerts ISO 27k A Audit logging security events shall be produced and kept for an agreed period to assist in future investigations and access control monitoring. A Protection of log information Logging facilities and log information shall be protected against tampering and unauthorized access. 29

30 Open Source Log Management Solutions Syslog-NG Php-syslog-ng Web Interface for Syslog-NG Snare Collecting windows logs and send them as a syslog messages OSSIM Open Source Security Information Management. Much more than a basic log Management Solution 30

31 PCI-DSS Encryption 3.4 Render PAN, at minimum, unreadable anywhere it is stored 4.1 Use strong cryptography and security protocols such as SSL/TLS or IPSEC to safeguard sensitive cardholder data during transmission over open, public networks. ISO 27k A.12.3 Cryptographic controls Objective: To protect the confidentiality, authenticity or integrity of information by cryptographic means. 31

32 TrueCrypt Open Source Encryption Solutions Disk Encryption Windows 7/Vista/XP, Mac OS X, and Linux OpenSwan IPSec VPN OpenVPN SSL VPN OpenSSH Sftp, SSH (Encrypted alternative for Telnet and FTP) 32

33 Change Management PCI-DSS Requirement 6.4 Follow change control procedures for all changes to system components. ISO 27k A Change control procedures. The implementation of changes shall be controlled by the use of formal change control procedures. 33

34 Open Source Change Management Solution OTRS Open source Ticket Request System ITIL-compatible change management system 34

35 Vulnerability Scan PCI-DSS Requirement 11.2 Run internal and external network vulnerability scans at least quarterly and after any significant change in the network (such as new system component installations, changes in network topology, firewall rule modifications, product upgrades). ISO 27k A.12.6 Technical Vulnerability Management Objective: To reduce risks resulting from exploitation of published technical vulnerabilities. 35

36 Open Source Vulnerability Scanner The short and wrong answer is Nessus This is valid before However they are still having a free version. OpenVAS Nessus Open Source Replacement Nmap Security Scanner 36

37 Penetration Testing PCI-DSS 11.3 Perform external and internal penetration testing at least once a year and after any significant infrastructure or application upgrade or modification (such as an operating system upgrade, a subnetwork added to the environment, or a web server added to the environment). ISO 27k A Control of technical vulnerabilities systems being used shall be obtained, the organization's exposure to such vulnerabilities evaluated, and appropriate measures taken to address the associated risk. 37

38 Metasploit Open Source PenTesting Tools The world's largest database of public, tested exploits Nikto W3af Web Application Attack and Audit Framework Backtrack Complete Linux Distribution Focused on Penetration Testing. Almost all Open Source Security Testing Tools Write your own exploit using ready made frameworks or libraries 38

39 Business Continuity BS25999 The whole standard is talking about Business Continuity ISO 27k A.14 Business continuity management 39

40 Open Source Tools for Business Continuity Linux HA High Availability Cluster Linux Virtual Server Load Balancing and High Availability Clusters for Web Servers or Web Application Servers 40

41 41 Open Source Software Useful for Security Compliance Firewall Network IDS / IPS File Integrity Monitoring / HIDS Web Application Firewall Log Management Encryption (at Rest, Motion) Change Management Vulnerability Scanning Penetration Testing Business Continuity Alerting System Configuration Management Database Monitoring

42 AGENDA 7 Open Source References and Case Study 42

43 Snort IDS/IPS Open Source References Has 300,000 Registered Users 4 million downloads DARPA, FBI, Pentagon, Other US Government Agencies are using snort Amazon Cloud Computing using snort OTRS Supports 27 languages Used by 80,000 corporate Lot of European Banks Bitdefender is using OTRS 43

44 Open Source Case Study Advanced Operations Technology Application Service Provider hosting 12 Saudi brokers Having more than 400 Servers running Open Source solutions over Linux OS 22 servers running Firewall (Iptables), IPS (Snort), VPN (OpenSwan). 11 Pairs of High Availability Cluster using (keepalived) 11 Web Load Balancer (Linux Virtual Server) Modsecurity Web Application Firewall installed on all Web Servers. OTRS is used as ticketing system and change management system OSSEC HIDS is installed on all servers and managed from a centralized console 44

45 Open Source Case Study Advanced Operations Technology Syslog-NG, Php-Syslog-NG acting as centralized log management collecting logs from all systems, network devices, applications. OpenLDAP acting as centralized directory service I-DOIT acting as a centralized CMDB for all system configurations. Nagios provides performance monitoring for all systems and network devices Trucrypt is being used to encrypt disks having confidential data stored OpenSSH for remote login and secure FTP. Using 2 factor authentication (key file and passphrase) ISCSI Enterprise Target acting as an IPSAN storage 45

46 AGENDA 8 Facing Open Source Challenges 46

47 Facing Open Source Challenges Major Challenges are lake of Professional services, Support, and Training. Facing these challenges can only be through: Hire and build a highly qualified open source team Able to dig into sourcecode when needed Able to deal with open-source communities and mailing lists Build a LAB / Testing environment and have a small R&D department (one or 2 guys) Short list the companies providing open source PS, Support, and Consulting Service. Without reaching an adequate level of competency in dealing with open source software forget about it. 47

48 AGENDA 9 Open Source Software Selection Criteria 48

49 Open Source Software Selection Criteria Reputation Ongoing effort Standards and interoperability Support (Community / Commercial) Version Documentation Skill set License 49

50 AGENDA 10 Conclusion 50

51 Conclusion Extreme claims OSS is always more secure Proprietary is always more secure Reality: Neither OSS nor proprietary always better Some specific OSS programs are more secure than their competing proprietary competitors Include OSS options when acquiring, then evaluate 51

52 Conclusion We are not open source fans We are not claiming that open source is better than closed source in all aspects We are just trying to convince you to consider open source and you will never loose. 52

53 Thank You Mostafa Ibrahim Security Meter CTO CISA, ISO LA, RHCE