|
Problem IC72118
|
Status: Closed |
Users able to update statistics for tables without appropriate privileges |
| product: |
DB2 FOR LUW / DB2FORLUW / 910 - DB2 |
| Problem description: |
Users are able to incorrectly update statistics columns
in SYSSTAT.TABLES for tables upon which they do not have
appropriate privileges. Thus, a malicious user may be able to
introduce query performance degradations by modifying table
statistics via this view.
Normally, in order to update the statistics for a
table via this view, you must have CONTROL or explicit
DATAACCESS privilege on the table. This APAR fix addresses
this problem. |
| Problem Summary: |
****************************************************************
* USERS AFFECTED: *
* All users running on Linux, Unix and Windows servers on DB2 *
* v9.1 Fix Pack 9 and earlier are affected. *
****************************************************************
* PROBLEM DESCRIPTION: *
* The view text of SYSSTAT.TABLES is suppose to limit the rows *
* returned according to the user privileges, but the view is *
* returning more rows than it should be. Thus, allowing users *
* to modify the statistics for tables they don't have the *
* necessary privileges on. *
****************************************************************
* RECOMMENDATION: *
* Refer to Local Fix or update to DB2 v9.1 Fix Pack 10. *
**************************************************************** |
| Local Fix: |
Revoke UPDATE privilege from PUBLIC on the SYSSTAT.TABLES view
until this APAR is applied. Namely, run:
revoke update on sysstat.tables from public
You may continue updating statistics with appropriate privileges
via the SYSCAT.TABLES view if needed, which is not affected by
this problem. |
| available fix packs: |
DB2 Version 9.1 Fix Pack 11 for Linux, UNIX and Windows
DB2 Version 9.1 Fix Pack 12 for Linux, UNIX and Windows
|
| Solution |
The problem is first fixed in DB2 v9.1 Fix Pack 10. |
| Workaround |
not known / see Local fix |
| Timestamps |
Date - problem reported :
Date - problem closed :
Date - last modified :
| 21.10.2010
05.07.2011
05.07.2011 |
| Problem solved at the following versions (IBM BugInfos) |
9.1.FP10
|
| Problem solved according to the fixlist(s) of the following version(s) |
| 9.1.0.10
|
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