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Hardcore Disassembler / Reverse Engineer Wanted!

Want to work with IDA and BinDiff?
Want to write PoC's and Exploits?

Your nationality is not important.
We will get you a work permit, find an apartment, and offer a
relocation compensation package.

http://secunia.com/hardcore_disassembler_and_reverse_engineer/

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TITLE:
MySQL MERGE Table Privilege Revoke Bypass

SECUNIA ADVISORY ID:
SA21259

VERIFY ADVISORY:
http://secunia.com/advisories/21259/

CRITICAL:
Not critical

IMPACT:
Security Bypass

WHERE:
>From local network

SOFTWARE:
MySQL 5.x
http://secunia.com/product/8355/
MySQL 4.x
http://secunia.com/product/404/
MySQL 3.x
http://secunia.com/product/99/

DESCRIPTION:
Peter Gulutzan has reported a vulnerability in MySQL, which can be
exploited by malicious users to bypass certain security
restrictions.

The vulnerability is caused due to a design error in the user
privilege verification for MERGE tables. This can be exploited to
keep access to a table via an in advance created MERGE table even
after the privileges has been revoked for the table.

SOLUTION:
MySQL 4.1.x:
Update to version 4.1.21.

MySQL 5.x:
The vulnerability has been fixed in the CVS repository and will also
be fixed in the upcoming 5.0.24 version.

Grant only trusted users access to the database.

NOTE: The vulnerability has been fixed by introducing the
"--skip-merge" command line option which disables the MERGE storage
engine.

PROVIDED AND/OR DISCOVERED BY:
Peter Gulutzan

ORIGINAL ADVISORY:
MySQL:
http://dev.mysql.com/doc/refman/4.1/en/news-4-1-21.html
http://dev.mysql.com/doc/refman/5.0/en/news-5-0-24.html

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About:
This Advisory was delivered by Secunia as a free service to help
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vulnerabilities.

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http://secunia.com/about_secunia_advisories/


Please Note:
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clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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