Berlin 2013 - Session - Gareth Rushgrove

Transcript

1. Security
   Monitoring
   Penetration testing
   meet monitoring
   Gareth Rushgrove
   

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2. Who
   (Who is this person?)
   

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3. @garethr
   

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4. UK Government
   Digital Service
   

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6. How did it come to this, that the government
   has one of the most exciting start-ups in the
   UK?!
   

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9. Last code
   I wrote
   

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11. The Problem
    (Why talk about security
    monitoring)
    

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12. The continuous
    delivery argument
    Gareth Rushgrove
    

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13. How often do you
    change your
    applications?
    Gareth Rushgrove
    

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14. Gareth Rushgrove
    How often do you
    conduct penetration
    tests?
    

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15. The security is part
    of quality assurance
    argument
    Gareth Rushgrove
    

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16. Testing used to be
    manual, slow and
    expensive
    Gareth Rushgrove
    

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17. Testing is now
    automated, fast and
    done on every commit
    Gareth Rushgrove
    

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18. Security testing is
    still mainly manual,
    slow and expensive
    Gareth Rushgrove
    

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19. This presentation
    (What to expect from this talk)
    

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20. Reactive security
    monitoring
    Gareth Rushgrove
    1
    

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21. Proactive security
    testing
    Gareth Rushgrove
    2
    

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22. Gareth Rushgrove
    3
    Community efforts
    

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23. Reactive
    monitoring
    (Mitigate attacks)
    

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24. rkhunter
    Gareth Rushgrove
    

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25. Gareth Rushgrove
    

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26. rkhunter \
    --check \
    --no-mail-on-warning \
    --skip-keypress
    Gareth Rushgrove
    

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27. Tuxtendo Rootkit [ Not found ]
    URK Rootkit [ Not found ]
    Vampire Rootkit [ Not found ]
    VcKit Rootkit [ Not found ]
    Volc Rootkit [ Found ]
    Xzibit Rootkit [ Not found ]
    X-Org SunOS Rootkit [ Not found ]
    zaRwT.KiT Rootkit [ Not found ]
    ZK Rootkit [ Not found ]
    Performing additional rootkit checks
    Suckit Rookit additional checks [ OK ]
    Checking for possible rootkit files and directories [ None found ]
    Checking for possible rootkit strings [ None found ]
    Gareth Rushgrove
    

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29. Gareth Rushgrove
    

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30. rkhunter \
    --check \
    --nocolors \
    --no-mail-on-warning \
    --skip-keypress \
    --no-summary | rkhunter-librato.py
    Gareth Rushgrove
    

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31. Gareth Rushgrove
    

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32. Gareth Rushgrove
    

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33. def test_beastkit_not_installed():
    assert (metric("beastkit_rootkit") == 0)
    Gareth Rushgrove
    

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34. >> nosetests -v rkhunter-librato-test.py
    rkhunter-libratoo-test.test_beastkit_not_installed ... ok
    ---------------------------------------------------------
    Ran 1 test in 1.585s
    OK
    Gareth Rushgrove
    

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35. Nginx Naxsi
    Gareth Rushgrove
    

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36. Web Application
    Firewall
    Gareth Rushgrove
    

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37. Gareth Rushgrove
    

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38. SecRulesEnabled;
    DeniedUrl "/RequestDenied";
    CheckRule "$SQL >= 8" BLOCK;
    CheckRule "$RFI >= 8" BLOCK;
    CheckRule "$TRAVERSAL >= 4" BLOCK;
    CheckRule "$EVADE >= 4" BLOCK;
    CheckRule "$XSS >= 8" BLOCK;
    Gareth Rushgrove
    

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39. 2013/09/18 08:59:57 [error] 891#0: *6 NAXSI_FMT:
    ip=192.168.50.20&server=victim&uri=/pictures/
    search.php&total_processed=14&total_blocked=7&zo
    ne0=ARGS&id0=1007&var_name0=query, client:
    192.168.50.20, server: localhost, request:
    "GET /pictures/search.php?query=--%3E+
    %3Csome_dangerous_input_a1056fd2f0ffbb7f18fec9bd
    33257e12ab5e0494b33011967bcbcbc5699408eb%2F%3E+
    %3C%21-- HTTP/1.1", host: "victim"
    Gareth Rushgrove
    

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40. id0=1007
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41. SQL Injection
    Gareth Rushgrove
    

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42. Gareth Rushgrove
    

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43. grok {
    type => "nginx_error"
    match => ["message", "
    ip=%{IP:client_ip}&
    server=%{IP:server_ip}&
    uri=%{PATH:uri}&
    total_processed=%{NUMBER:total_processed}&
    total_blocked=%{NUMBER:total_blocked}&
    zone0=%{WORD:zone}&
    id0=%{NUMBER:id}"]
    }
    Gareth Rushgrove
    

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44. Gareth Rushgrove
    

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45. Fail2Ban
    Gareth Rushgrove
    

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46. Gareth Rushgrove
    

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47. [ssh]
    enabled = true
    port = ssh
    filter = sshd
    logpath = /var/log/auth.log
    maxretry = 3
    [ssh-ddos]
    enabled = true
    port = ssh
    filter = sshd-ddos
    logpath = /var/log/auth.log
    maxretry = 6
    Gareth Rushgrove
    

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48. [ssh-ddos] Ban 192.168.50.20
    Gareth Rushgrove
    

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49. [nginx-naxsi]
    enabled = true
    port = http,https
    filter = nginx-naxsi
    logpath = /var/log/nginx/*error.log
    maxretry = 2
    Gareth Rushgrove
    

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50. grok {
    type => "naxsi_fail2ban"
    match => ["message", "
    WARNING \[nginx-naxsi\]
    %{WORD:action} %{IP:ip}"
    ]
    }
    Gareth Rushgrove
    

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51. Auditd
    Gareth Rushgrove
    

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52. Auditd in less than 2
    minutes. Maybe.
    Gareth Rushgrove
    

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53. -a exit,always -S mkdir
    Gareth Rushgrove
    

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54. type=CWD msg=audit(1379493067.779:57): cwd="/tmp"
    type=PATH msg=audit(1379493067.779:57): item=0
    name="vagrant-puppet" inode=20 dev=fc:00 mode=041777
    ouid=0 ogid=0 rdev=00:00
    type=SYSCALL msg=audit(1379493067.779:58):
    arch=c000003e syscall=83 success=yes exit=0
    a0=7fff172d0e5e a1=1ed a2=1ed a3=7fff172cf910 items=2
    ppid=1239 pid=1241 auid=0 uid=0 gid=0 euid=0 suid=0
    fsuid=0 egid=0 sgid=0 fsgid=0 tty=(none) ses=21
    comm="mkdir" exe="/bin/mkdir" key=(null)
    type=CWD msg=audit(1379493067.779:58): cwd="/tmp/
    vagrant-puppet"
    Gareth Rushgrove
    

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55. cwd="/tmp"
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56. syscall=83
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57. sys_symlink
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58. Gareth Rushgrove
    

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59. comm="mkdir"
    Gareth Rushgrove
    

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60. cwd="/tmp/vagrant-puppet"
    Gareth Rushgrove
    

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61. Aside:
    penetration
    testing tools
    (State of open source)
    

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62. Skipfish, nikto, w3af,
    garmr, sslyze, owasp
    zap, arachni, sqlmap,
    sslscan, TLSSLed,
    slowhttptest, DIRB,
    SQLiBF
    Gareth Rushgrove
    

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63. BackTrack
    Gareth Rushgrove
    

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64. The problem with
    distributing software
    as a Linux distribution
    Gareth Rushgrove
    

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65. Configuration
    management +
    Vagrant
    Gareth Rushgrove
    

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66. Penetration
    testing tools
    

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67. Vulnerable
    web apps
    

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68. Source
    code
    

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69. Puppet
    module
    

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70. Proactive
    monitoring
    (Attack yourself)
    

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71. Gareth Rushgrove
    

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72. nmap monitorama.eu
    Gareth Rushgrove
    

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73. Starting Nmap 5.21 ( http://nmap.org ) at
    2013-09-18 15:09 BST
    Nmap scan report for monitorama.eu
    (141.101.116.49)
    Host is up (0.17s latency).
    Hostname monitorama.eu resolves to 2 IPs. Only
    scanned 141.101.116.49
    Not shown: 998 filtered ports
    PORT STATE SERVICE
    80/tcp open http
    8080/tcp open http-proxy
    Nmap done: 1 IP address (1 host up) scanned in
    24.18 seconds
    Gareth Rushgrove
    

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74. Gareth Rushgrove
    

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75. it "should have one port open" do
    @host.open_ports.should have(1).items
    end
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76. Gareth Rushgrove
    

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77. 1) the monitorama.eu website should have one port open
    Failure/Error: @host.open_ports.should have(1).items
    expected 1 items, got 2
    Finished in 8.99 seconds
    1 example, 1 failure
    Gareth Rushgrove
    

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78. Arachni
    Gareth Rushgrove
    

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79. Gareth Rushgrove
    

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80. Web application
    security scanner
    Gareth Rushgrove
    

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81. arachni http://monitorama.eu --modules=xss
    Gareth Rushgrove
    

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82. +
    +[+] 2 issues were detected.
    +
    +[+] [1] Trusted -- Cross-Site Scripting (XSS)
    +[~] ~~~~~~~~~~~~~~~~~~~~
    +[~] ID Hash:
    +[~] Severity: High
    +[~] URL: http://victim/pictures/search.php
    +[~] Element: form
    +[~] Method: GET
    +[~] Tags: xss, regexp, injection, script
    +[~] Variable: query
    +[~] Description:
    +[~] Client-side code (like JavaScript) can be injected
    + into the web application which is then returned to
    + the user's browser. This can lead to a compromise
    + of the client's system or serve as a pivoting
    + point for other attacks.
    +
    Gareth Rushgrove
    

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83. Gauntlt
    Gareth Rushgrove
    

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84. Gareth Rushgrove
    

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85. Cucumber + security
    tool integrations
    Gareth Rushgrove
    

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86. Officially supports
    curl, nmap, sslyze,
    sqlmap, garmr
    Gareth Rushgrove
    

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87. Gareth Rushgrove
    

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88. $ gauntlt methods.attack
    Gareth Rushgrove
    

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89. Gareth Rushgrove
    

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90. Support in master
    dirb, arachni
    Gareth Rushgrove
    

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91. Gareth Rushgrove
    

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92. $ gauntlt xss.attack
    Gareth Rushgrove
    

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93. Conclusions
    (You convinced me, now what?)
    

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94. Gareth Rushgrove
    Use penetration tests
    to discover how
    attackers work
    1
    

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95. Gareth Rushgrove
    Use security
    monitoring to build and
    maintain checklists
    2
    

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96. Share common
    configuration patterns
    Gareth Rushgrove
    3
    

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97. Gareth Rushgrove
    Help with packaging
    and configuration
    management
    4
    

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98. Gareth Rushgrove
    5
    Help integrate
    security tools with
    monitoring systems
    

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99. Gareth Rushgrove
    Get security together
    with developers and
    operations
    6
    

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100. Questions?
     (And thanks for listening)
     

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