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Category:   Application (Database)  >   MySQL Vendors:
MySQL ALTER DATABASE Processing Error Lets Remote Authenticated Users Deny Service
SecurityTracker Alert ID:  1024160
SecurityTracker URL:
CVE Reference:   CVE-2010-2008   (Links to External Site)
Date:  Jun 30 2010
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): prior to 5.1.48
Description:   A vulnerability was reported in MySQL. A remote authenticated user can cause denial of service conditions.

A remote authenticated user can send a specially crafted ALTER DATABASE command to cause the target server to move a data directory into a new subdirectory, causing the data directory to become unusable.

A demonstration exploit request is provided [where "<special>" is "." or ".." or is a sequence that begins with "./" or "../"]:


Shane Bester reported this vulnerability.

Impact:   A remote authenticated user can cause denial of service conditions on the target system.
Solution:   The vendor has issued a fix (5.1.48).

The vendor's advisory is available at:

Vendor URL: (Links to External Site)
Cause:   Input validation error
Underlying OS:   Linux (Any), UNIX (Any), Windows (Any)

Message History:   None.

 Source Message Contents

Date:  Wed, 30 Jun 2010 04:35:53 +0000
Subject:  MySQL

MySQL incorrectly processed ALTER DATABASE `#mysql50#<special>` UPGRADE DATA DIRECTORY 
NAME where <special> was ., .., or a sequence starting with ./ or ../. It used the 
server data directory (that contains other regular databases) as the database 
directory. (Bug#53804, CVE-2010-2008)

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