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iDefense Security Advisory 01.31.08: IBM Informix Dynamic Server onedcu File Creation Vulnerability
iDefense Security Advisory 01.31.08
Jan 31, 2008
IBM Corp.'s Informix Dynamic Server is an online transaction processing
data server. For more information, visit the product's homepage at the
Local exploitation of a file creation vulnerability in IBM Corp.'s
Informix Dynamic Server allows attackers to elevate privileges to root.
The set-uid root "onedcu" command requires six parameters to be
specified when it is executed. The second parameter is a "Trace" file
that this program will open and write to with elevated privileges.
Exploitation allows local attackers to gain root privileges.
iDefense confirmed the existence of this vulnerability in IBM Corp.'s
Informix Dynamic Server version 10.00 UC6TL installed on a Linux
system. Other versions are also suspected as vulnerable. Versions for
other supported Unix systems should also be considered vulnerable.
Removing the set-uid bit from the "onedcu" program included with
Informix will prevent exploitation. However, this could disable some
functionality for non-root users.
VI. VENDOR RESPONSE
IBM Corp. has addressed this vulnerability with the release of version
10.00.xC8 of Informix Dynamic Server. For more information, visit the
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CVE-2008-0368 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org/), which standardizes names for
VIII. DISCLOSURE TIMELINE
09/01/2007 Initial vendor notification
09/13/2007 Initial vendor response
01/31/2008 Coordinated public disclosure
The discoverer of this vulnerability wishes to remain anonymous.
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X. LEGAL NOTICES
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at the time of publishing based on currently available information. Use
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