Oracle MySQL 'ALTER DATABASE' Remote Denial Of Service Vulnerability

2010.08.04
Credit: Shane Bester
Risk: Low
Local: No
Remote: Yes
CWE: CWE-20


CVSS Base Score: 3.5/10
Impact Subscore: 2.9/10
Exploitability Subscore: 6.8/10
Exploit range: Remote
Attack complexity: Medium
Authentication: Single time
Confidentiality impact: None
Integrity impact: None
Availability impact: Partial

A vulnerability was reported in MySQL. A remote authenticated user can cause denial of service conditions. This issue affects versions prior to MySQL 5.1.48. 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 "../"]: ALTER DATABASE `#mysql50#<special>` UPGRADE DATA DIRECTORY NAME Vendor advisory at: http://dev.mysql.com/doc/refman/5.1/en/news-5-1-48.html

References:

http://www.vupen.com/english/advisories/2010/1918
http://www.securitytracker.com/id?1024160
http://www.securityfocus.com/bid/41198
http://secunia.com/advisories/40762
http://secunia.com/advisories/40333
http://lists.fedoraproject.org/pipermail/package-announce/2010-July/044546.html
http://dev.mysql.com/doc/refman/5.1/en/news-5-1-48.html
http://bugs.mysql.com/bug.php?id=53804


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