Multiple Arbitrary Command Execution Vulnerabilities

NGSSoftware Insight Security Research Advisory

Name: Multiple Arbitrary Command Execution Vulnerabilities
Systems Affected: All versions of Informix
Severity: High
Vendor URL:
Author: David Litchfield [ davidl@xxxxxxxxxxxxxxx ]
Date of Public Advisory: 2nd August 2006
Advisory number: #NISR02082006F
Advisory URL:

Informix Dynamic Server is a database developed by IBM. During a security assessment of Informix multiple arbitrary command execution flaws were found.

It is possible to inject arbitrary operating system commands into the SET DEBUG FILE SQL statement and the start_onpload
and dbexp procedures. Any commands injected into SET DEBUG FILE will execute with the privileges of the informix user; any command injected into dbexp or start_onpload will execute with the privileges of the logged on user.

Fix Information
IBM was alerted to these flaws on the 6th January 2005. Patches have now been made available.

NGSSQuirreL for Informix, an advanced vulnerability assessment scanner designed specifically for Informix, can be used to accurately determine whether your servers are vulnerable to this flaw. More information about NGSSQuirreL for Informix can be found here

About NGSSoftware

NGSSoftware develops vulnerability assessment and compliancy tools for database servers including Oracle, Microsoft SQL Server, DB2, Sybase and Informix. Headquartered in the United Kingdom NGS has offices in London, St. Andrews (UK), Sydney, Brisbane, and Perth (Australia) and Texas in the United States; NGSConsulting provide services to some of the largest and most demanding organizations around the globe.

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