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   Imperva discovers a critical access control bypass
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   Author  Topic: Imperva discovers a critical access control bypass  (Read 2151 times)
Pete Finnigan
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Imperva discovers a critical access control bypass
« on: Jan 19th, 2006, 12:36pm »
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Hi,
I have been deeply affected by this post :
http://www.petefinnigan.com/weblog/archives/00000699.htm
 
Revealing such a bug means that any user can now access the database as sysdba?  
 
I wonder how many databases could be affected by the bug, but it sounds like a hudge security hole.
 
Did you try this exploit? Is it really as simple as explained?  
 
Is it issue DB18?
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Pete Finnigan
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Re: Imperva discovers a critical access control by
« Reply #1 on: Jan 19th, 2006, 12:56pm »
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Hi Laurent,
 
I don't think that it is a good idea to discuss the details of how you would actually exploit it here. Whilst they have described the issue in detail they have fallen short of actually revealing exloit code.  
 
This is a very serious bug and potentially means any database is wide open.
 
cheers
 
Pete
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Re: Imperva discovers a critical access control by
« Reply #2 on: Jan 20th, 2006, 8:34am »
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yes pete, you are right  Lips Sealed
 
the biggest problem of such a bug is that it is quite well described on the internet how you do get dba access! This is imho not very fair from imperva, is it?
 
Quote:
any database is wide open

 Shocked Shocked Shocked
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Pete Finnigan
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Re: Imperva discovers a critical access control by
« Reply #3 on: Feb 9th, 2006, 11:57am »
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I can confirm that this is solved in cpujan2006 and later. Sofar I tested on win32 against 9.2.0.7 patch 6 & patch 7,  and 10.2.0.1 + patch 4923768  and the new 10.2.0.2.  
After the fix is applied on the database side you get to see:
 
ORA-00604: error occurred at recursive SQL level 1
ORA-01031: insufficient privileges
 
Any non-patched databases however allow me to create dba role accounts while connecting as a CREATE SESSION only account
 Angry
 
Cheers
 
Andre
[color=Blue][/color]
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