Server 2003
Mark Burnett
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Exploiting, Abusing, and Securing the FrontPage Server Extensions on Windows Server 2003 презентация
Содержание
- 1. Exploiting, Abusing, and Securing the FrontPage Server Extensions on Windows Server 2003
- 2. FrontPage: 2003 Exploiting, Abusing, and Securing the
- 3. Background History of the FPSE Different names, same old holes What products include FPSE?
- 4. Risks Are the FPSE as insecure as
- 5. Risks What are some greater risks? Confusing
- 6. The FPSE Files The same files? _vti_bin/shtml.dll _vti_bin/_vti_aut/author.dll _vti_bin/_vti_adm/admin.dll FPSE 2002 _vti_bin/owssvr.dll _vti_bin/_vti_adm/fpadmdll.dll
- 7. FPSE Directories _vti_bin – FPSE Binaries _private - _vti_cnf _vti_pvt _vti_script _vti_txt
- 8. Decoding vti_rpc Sending vti_rpc methods POST to
- 9. Sample Output vermeer RPC packet method=list
- 10. Cool vti_rpc Tricks Finding unprotected web sites Listing webs Other info gathering method=list+services:4.0.2.0000&service_name=
- 11. vti_rpc Exploits New exploits to be announced
- 12. Other Exploits New exploits to be announced
- 13. Updating the FPSE Finding product updates Confusing and inconsistent Manual fixes
- 14. Manual Fixes Htimage.exe and Imagemap.exe Microsoft’s solution Another Microsoft solution The real solution?
- 15. The Security Model Browse, Author, and Administer NTFS Permissions on web root Common Mistakes
- 16. Installing & Uninstalling Why are the directories
- 17. Moving the FPSE 1. Move the binaries 2. Update the registry 3. Update the metabase
- 18. Securing the FPSE The FPSE can be
- 19. Advanced Techniques Mirror sites URLScan Rules Custom
- 20. FPSE Intrusions Spotting attacks Log entries Other trails FPSE vs. WebDAV
- 21. Snort Rules Updated Snort rules Logging FPSE authoring with Snort
- 22. FrontPage Tools Xfp.pl – FrontPage security scanner
- 23. Xfp.pl
- 24. Fpseinfo.pl Returns FPSE information - Web server
- 25. SecureFPSE.cmd Removes htimage.exe and imagemap.exe Moves binaries
FrontPage: 2003 Exploiting, Abusing, and Securing the FrontPage Server Extensions on Windows Server 2003 Mark Burnett
Слайд 2FrontPage: 2003
Exploiting, Abusing, and Securing the FrontPage Server Extensions on Windows
Server 2003
Mark Burnett
Mark Burnett
Слайд 4Risks
Are the FPSE as insecure as everyone says?
What are the real
risks?
Increased attack surface
Entry point
Information gathering
Running on system partition
Insufficient logging
Storing files within the web root
Increased attack surface
Entry point
Information gathering
Running on system partition
Insufficient logging
Storing files within the web root
Слайд 5Risks
What are some greater risks?
Confusing security model
Running in-process with inetinfo.exe
Relaxed NTFS
permissions
Cannot be secured without NTFS
Cannot be secured without NTFS
Слайд 6The FPSE Files
The same files?
_vti_bin/shtml.dll
_vti_bin/_vti_aut/author.dll
_vti_bin/_vti_adm/admin.dll
FPSE 2002
_vti_bin/owssvr.dll
_vti_bin/_vti_adm/fpadmdll.dll
Слайд 8Decoding vti_rpc
Sending vti_rpc methods
POST to FPSE binaries
GET to owssvr.dll
Multiple posts using
CAML
Interpreting output
Interpreting output
Слайд 9Sample Output
vermeer RPC packet
method=list services:4.0.2.0
services_list=
SR|msiis
vti_usagevisitsbyweek
UX|337 380 423 501 297
vti_usagebymonth
UX|88 4195 2667
3497 90
vti_welcomenames
VX|Default.htm Default.asp Default.aspx
vti_adminurl
SR|/_vti_bin/_vti_adm/fpadmdll.dll
Слайд 10Cool vti_rpc Tricks
Finding unprotected web sites
Listing webs
Other info gathering
method=list+services:4.0.2.0000&service_name=
Слайд 14Manual Fixes
Htimage.exe and Imagemap.exe
Microsoft’s solution
Another Microsoft solution
The real solution?
Слайд 16Installing & Uninstalling
Why are the directories there on a clean install?
Why
won’t they uninstall?
How do you remove them?
How do you remove them?
Слайд 18Securing the FPSE
The FPSE can be used safely if you:
Secure user
accounts
Set proper NTFS permissions
Set proper IIS permissions
Configure the registry defaults
Keep patched
Use SSL for authoring
Manage log files
Set IP Restrictions
Set proper NTFS permissions
Set proper IIS permissions
Configure the registry defaults
Keep patched
Use SSL for authoring
Manage log files
Set IP Restrictions
Слайд 19Advanced Techniques
Mirror sites
URLScan Rules
Custom ISAPI filter
FPSE neutered
NTFS restrictions
Remove directories
Disable authoring
Слайд 22FrontPage Tools
Xfp.pl – FrontPage security scanner
Fpseinfo.pl – FrontPage info gathering
SecureFPSE.cmd –
Harden FrontPage Server Extensions
fpBlock – ISAPI filter for FrontPage IP restrictions
fpBlock – ISAPI filter for FrontPage IP restrictions
Слайд 24Fpseinfo.pl
Returns FPSE information
- Web server platform
- Anonymous user account
- Site statistics
-
Hidden directories
- More
- More
Слайд 25SecureFPSE.cmd
Removes htimage.exe and imagemap.exe
Moves binaries
Registers components in new lcoation
Updates metabase
Updates registry
