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MySQL MERGE Table Privilege Revoke Bypass
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Secunia Advisory:
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SA21259
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Release Date:
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2006-08-01
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Last Update:
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2007-07-20
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Popularity:
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14,212 views
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Critical:
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Not critical
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Impact:
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Security Bypass
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| Software: | MySQL 3.x
MySQL 4.x
MySQL 5.x
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| CVE reference: | CVE-2006-4031
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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 This can be exploited to keep access to a table via an in advance created MERGE table even after the privileges has been revoked for the table.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:
Update to version 5.0.24 or later.
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
Changelog:
2006-08-10: Added CVE reference.
2007-07-20: Updated "Solution" section.
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 Secunia Advisory
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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