SQL Spida worm propagation
|sql-spida-worm (9124)||High Risk|
The SQL Spida worm propagates via Microsoft SQL Server installations with administrator accounts that have no passwords defined. This worm attempts to locate and login to Microsoft SQL servers with the "sa" account and a blank password. Once a vulnerable computer is found, the worm will infect that target, send its configuration and password information to an external host, and begin scanning for new targets.
Although Microsoft recommends that the "sa" account be set upon installation, many servers are not properly secured. If the worm finds a vulnerable server, it will attempt to execute its startup script by running the "xp_cmdshell" function, which is the SQL call used to execute system commands within SQL queries.
The main function of the Spida worm is to export an infected server's SAM password database and forward information about its network and database configuration.
For more information refer to Internet Security Systems Security Alert #118. See References.
Microsoft SQL Server customers should refer to the following address for information and securing Microsoft SQL Server:
- IBM Internet Security Systems X-Force Database: Blank sa password on Microsoft SQL Server.
- Internet Security Systems Security Alert #118: Microsoft SQL Spida Worm Propagation.
- National Infrastructure Protection Center Advisory 02-003: Microsoft SQL Worm Spida.
- Microsoft SQL Server
- Microsoft Windows 2000
- Microsoft Windows 2003 Server
- Microsoft Windows NT 4.0
May 21, 2002
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