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Vigil@nce: MySQL, altering tables

September 2008 by Vigil@nce


A local attacker can use DATA DIRECTORY and INDEX DIRECTORY to alter database tables.

Gravity: 2/4

Consequences: data creation/edition

Provenance: user shell

Means of attack: no proof of concept, no attack

Ability of attacker: expert (4/4)

Confidence: multiples sources (3/5)

Diffusion of the vulnerable configuration: high (3/3)

Creation date: 16/09/2008

Identifier: VIGILANCE-VUL-8109


- MySQL [confidential versions]
- MySQL Community Server [confidential versions]
- MySQL Enterprise Server [confidential versions]


The DATA DIRECTORY and INDEX DIRECTORY options indicates paths where data and index files of a table are located. An attacker can use them to access to tables with the same name. This vulnerability has the reference CVE-2008-2079 (VIGILANCE-VUL-7804 (, VIGILANCE-VUL-7803 (, VIGILANCE-VUL-7802 (

This vulnerability was corrected. However, patches were incorrect:

- the official patch can be bypassed using symbolic links (CVE-2008-4098)
- the Debian patch can be by passed by changing the path (CVE-2008-4097)

A local attacker can thus still use DATA DIRECTORY and INDEX DIRECTORY to alter database tables.


Identifiers: 32167, CVE-2008-2079, CVE-2008-4097, CVE-2008-4098, VIGILANCE-VUL-8109

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