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ZDI-10-216: IBM Informix Dynamic Server oninit.exe EXPLAIN Remote Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Mon, 18 Oct 2010 16:15:57 -0500

ZDI-10-216: IBM Informix Dynamic Server oninit.exe EXPLAIN Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-216
October 18, 2010

-- CVSS:
9, (AV:N/AC:L/Au:S/C:C/I:C/A:C)

-- Affected Vendors:
IBM

-- Affected Products:
IBM Informix

-- TippingPoint(TM) IPS Customer Protection:
TippingPoint IPS customers have been protected against this
vulnerability by Digital Vaccine protection filter ID 5829.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows attackers to execute arbitrary code on
vulnerable installations of IBM Informix Dynamic Server. Authentication
is required in that an attacker must have valid credentials to connect
to the database.

The specific flaw exists within the oninit.exe process bound by default
to TCP port 9088 or 1526. A lack of sanity checking within a logging
function can result in a stack based buffer overflow leading to
arbitrary code execution under the context of the SYSTEM user.

-- Vendor Response:
IBM states:
this issue is fixed in version by defect #

idsdb00154243 - 11.50.xC1
idsdb00154125 - 11.10.xC2W2

-- Disclosure Timeline:
2008-02-07 - Vulnerability reported to vendor
2010-10-18 - Coordinated public release of advisory

-- Credit:
This vulnerability was discovered by:
    * Anonymous

-- About the Zero Day Initiative (ZDI):
Established by TippingPoint, The Zero Day Initiative (ZDI) represents
a best-of-breed model for rewarding security researchers for responsibly
disclosing discovered vulnerabilities.

Researchers interested in getting paid for their security research
through the ZDI can find more information and sign-up at:

    http://www.zerodayinitiative.com

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TippingPoint provides its customers with zero day protection through
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specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
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