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Don Burleson Blog 







ku$_dblink_view tips

Oracle Database Tips by Donald BurlesonMarch 3, 2015

Question:  What are the security implications of the ku$_dblink_view?

Answer:  The ku$_dblink_view and the related ku$_10_1_dblink_view, internal table about database links that store the password that is specified when a database link is created:

create public database link
connect to

identified by

Rampant author Paul Wright shows this working example of ku$_dblink_view that displays the passwordx column, and thereby displays the password for a database link, a clear security issue, but only if a SYSDBA user ID is compromised.  This is because SYSDBA user is required to see the passwordx column of ku$_dblink_view:

connect sys/xxxx;


4353, (substr(passwordx,3,16)))) passwd


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