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ZDI-10-217: IBM Informix Dynamic Server DBINFO Remote Code Execution Vulnerability
From: ZDI Disclosures <zdi-disclosures () tippingpoint com>
Date: Mon, 18 Oct 2010 16:15:52 -0500

ZDI-10-217: IBM Informix Dynamic Server DBINFO Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-217
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 6418.
For further product information on the TippingPoint IPS, visit:

    http://www.tippingpoint.com

-- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of IBM Informix Database Server. SQL query
execution privileges are required to exploit this vulnerability.

The specific flaw exists when processing the arguments to the DBINFO
keyword in a SQL query. User-supplied data is copied into a stack-based
buffer without proper bounds checking resulting in an exploitable
overflow. Exploitation can result in arbitrary code execution under the
context of the database server.

-- Vendor Response:
IBM states:
This issue was fixed in version by defect#

idsdb00165017 - Fix checked in after last 7.31 fix pack was released.
7.31 is now EOS. Fix is available for special build request if Service
Extension has been purchased.  Fix is not included in an available fix
pack.

idsdb00165019 - Fix checked in after last 9.40 fix pack was released.
9.40 is now EOS.  Fix is available for special build request if Service
Extension has been purchased.  Fix is not included in an available fix
pack.

idsdb00165021 - IDS 10.00.xC10
idsdb00165022 - IDS 11.10.xC3
idsdb00165023 - IDS 11.50.xC3

-- Disclosure Timeline:
2008-08-26 - 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

The ZDI is unique in how the acquired vulnerability information is
used. TippingPoint does not re-sell the vulnerability details or any
exploit code. Instead, upon notifying the affected product vendor,
TippingPoint provides its customers with zero day protection through
its intrusion prevention technology. Explicit details regarding the
specifics of the vulnerability are not exposed to any parties until
an official vendor patch is publicly available. Furthermore, with the
altruistic aim of helping to secure a broader user base, TippingPoint
provides this vulnerability information confidentially to security
vendors (including competitors) who have a vulnerability protection or
mitigation product.

Our vulnerability disclosure policy is available online at:

    http://www.zerodayinitiative.com/advisories/disclosure_policy/

Follow the ZDI on Twitter:

    http://twitter.com/thezdi


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