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Computer Security Update

Computer Security Update. Bob Cowles, SLAC bob.cowles @ stanford.edu Presented at HEPiX - TRIUMF 23 Oct 2003. Work supported by U. S. Department of Energy contract DE-AC03-76SF00515. SLAC Computer Security. Thinking evil thoughts. Protecting from evil deeds. Slammer Impact. India. China.

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Computer Security Update

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  1. Computer Security Update Bob Cowles, SLAC bob.cowles@stanford.edu Presented at HEPiX - TRIUMF 23 Oct 2003 Work supported by U. S. Department of Energy contract DE-AC03-76SF00515

  2. SLAC Computer Security Thinking evil thoughts Protecting from evil deeds HEPiX - TRIUMF

  3. Slammer Impact HEPiX - TRIUMF

  4. India China Japan Korea Australia HEPiX - TRIUMF

  5. http://www.microsoft.com/security/security_bulletins/ HEPiX - TRIUMF

  6. HEPiX - TRIUMF

  7. MSBlaster Released MSBlaster at SLAC HEPiX - TRIUMF

  8. FireWall Log – Infected Machines Sep 16 18:29:18 icmp 134.79.137.220 -> 134.79.72.98 (8/0) Sep 16 18:29:19 icmp 134.79.137.220 -> 134.79.72.198 (8/0) Sep 16 18:29:20 icmp 134.79.137.220 -> 134.79.73.42 (8/0) Sep 16 18:38:46 tcp 134.79.137.220(3325) -> 134.76.2.205(135) Sep 16 18:38:47 tcp 134.79.137.220(3169) -> 134.76.2.48(135) Sep 16 18:38:48 tcp 134.79.137.220(3249) -> 134.76.2.128(135) Sep 16 18:40:06 icmp 134.79.129.243 -> 134.79.72.0 (8/0) Sep 16 18:40:06 icmp 134.79.129.243 -> 134.79.72.64 (8/0) Sep 16 18:40:07 icmp 134.79.129.243 -> 134.79.72.128 (8/0) Sep 16 18:40:17 tcp 134.79.136.68(4107) -> 134.79.124.0(135) Sep 16 18:40:18 tcp 134.79.136.68(4194) -> 134.79.124.98(135) Sep 16 18:40:19 tcp 134.79.136.68(4292) -> 134.79.124.196(135) Sep 16 22:28:25 tcp 134.79.129.243(4413) -> 134.76.24.39(135) Sep 16 22:28:26 tcp 134.79.129.243(4377) -> 134.76.22.41(135) Sep 16 22:28:27 tcp 134.79.129.243(4383) -> 134.76.22.113(135) HEPiX - TRIUMF

  9. Infection Sources @ SLAC • 32% VPN • 22% DHCP (reg, internal network) • 20% Fixed IP On vacation, laptop infected outside, etc. • 14% Infected during build / patch • 12% Dialup HEPiX - TRIUMF

  10. Blaster - Easy to Get Infected 09/29/103 11:46:42 Host: 134.79.25.55 Port: 135 TCP Blocked 09/29/103 11:46:41 Host: 134.79.25.55 Port: 135 TCP Blocked email @ 12:21pm: Bob, is host "illusion" yours, as per my so-called memory? But the mac addr is registered to Richard Mount ... Sep 29 11:41:37 dhcp2 dhcpd: DHCPACK on 134.79.25.55 to 00:10:a4:e4:2a:b8 (illusion) host roam-rmount2 { hardware ethernet 00:10:a4:e4:2a:b8; }# 01/25/00 # PC54566, Richard Mount HEPiX - TRIUMF

  11. https://rhn.redhat.com/errata/rh73-errata-security.html HEPiX - TRIUMF

  12. HEPiX - TRIUMF

  13. HEPiX - TRIUMF

  14. HEPiX - TRIUMF

  15. http://docs.info.apple.com/article.html?artnum=61798 HEPiX - TRIUMF

  16. HEPiX - TRIUMF

  17. HEPiX - TRIUMF

  18. HEPiX - TRIUMF

  19. http://sunsolve.sun.com/pub-cgi/show.pl?target=security/sec HEPiX - TRIUMF

  20. HEPiX - TRIUMF

  21. http://www.cisco.com/warp/public/707/advisory.html HEPiX - TRIUMF

  22. HEPiX - TRIUMF

  23. It Sucks Not to Patch • Popular rookit in many variations • Hides files, directories, processes; precompiled password • With keyboard and/or ssh sniffers • Listens on *all* open ports for backdoor • Any port open inbound allows backdoor signal, sk thens opens outbound tcp for encrypted shell connection HEPiX - TRIUMF

  24. suckit (cont) • Home page http://hysteria.sk/sd/ • Latest versions not publicly available • Also find exploits for • ptrace • sendmail 8.11.x HEPiX - TRIUMF

  25. Virus Warning! http://www.trendmicro.com/map/ Last 24 Hours Last 30 Days HEPiX - TRIUMF

  26. Ballmer @ Gartner ITXpo • Windows has fewer vulnerabilities than RH Linux [RH6] • No roadmap for Linux. There’s nobody to hold accountable for security issues • The security of Microsoft products is our top priority. We have our best brains on it. • We understand this is an issue of customer satisfaction. http://www.theregister.co.uk/content/4/33522.html HEPiX - TRIUMF

  27. Microsoft @ Stanford • Universities tend to be a worst case • Diverse, unmanaged • Population • Hardware • Software • Unlikely to fit into AD model • Stanford had 8000 machines compromised by Blaster BEFORE students returned for classes HEPiX - TRIUMF

  28. Feedback to Microsoft • Clear & meaningful impact statements • Fix IE (30+ outstanding bugs) • Reduce the attack vector (profile services) • Don’t require license check for security patches (e. g. MS Office CD) • No tie-in to IE (no active scripting) HEPiX - TRIUMF

  29. Feedback to Microsoft (cont) • Open up patching tools and process • Understand 3rd party tools +/- • Allow other vendors to use same tools for their Windows products • Provide feedback on real patch status (local & remote) • Need general patch deployment tool not requiring AD HEPiX - TRIUMF

  30. Conclusions [Unchanged from last year] • Poor administration is still a major problem • Firewalls cannot substitute for patches • Multiple levels of virus/worm protection are necessary • Clue is more important than open source HEPiX - TRIUMF

  31. No Easy Solutions Questions? HEPiX - TRIUMF

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