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Category:   Application (Database)  >   IBM DB2 Vendors:   IBM
IBM DB2 CTAS Permissions Bug Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1042176
SecurityTracker URL:  http://securitytracker.com/id/1042176
CVE Reference:   CVE-2018-1857   (Links to External Site)
Date:  Nov 28 2018
Impact:   User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 11.1
Description:   A vulnerability was reported in IBM DB2. A local user can obtain elevated privileges on the target system.

A local user can create a table using AS (CTAS) sub-select statements to bypass Row and Column Access Control (RCAC) rules when using the 'WITH DATA' clause to select and insert data, allowing a user to bypass FGAC access controls.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   IBM has issued a fix (APAR IT26595).

The IBM advisory is available at:

http://www.ibm.com/support/docview.wss?uid=ibm10734059

Vendor URL:  www.ibm.com/support/docview.wss?uid=ibm10734059 (Links to External Site)
Cause:   Access control error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (HP/UX), UNIX (Solaris - SunOS), Windows (Any)

Message History:   None.


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