Modify Data via Inline Views

Name Modify Data via Inline Views (8107967) [DB09]
Systems Affected Oracle 9i - 10g Rel. 2
Severity High Risk
Category Unauthorized Access
Vendor URL http://www.oracle.com/
Author Alexander Kornbrust (ak at red-database-security.com)
Advisory 18 October 2006 (V 1.00)
Advisory http://www.red-database-security.com/advisory/oracle_modify_data_via_inl
ine_views.html

Details
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Updates, deletes and inserts are possible with least-privilege via inline views. A user with create session only can insert/update/delete data (e.g. the dual table). This bug is similar but not identical to the bug which was fixed in the July 2006 CPU (Modify Data via views). No workarounds available.

Samples
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delete from (specially crafted inline view)
insert into (specially crafted inline view)
update (specially crafted inline view)

Patch Information
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Apply the patches for Oracle CPU October 2006.

History
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24-jul-2006 Oracle secalert was informed about a variant of the create view bug.
18-oct-2006 Oracle published CPU October 2006 [DB09]
18-oct-2006 Advisory published

Additional Information
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An analysis of the Oracle CPU Oct 2006 is available here http://www.red-database-security.com/advisory/oracle_cpu_oct_2006.html