bugtraq - ZDI-12-152 : Oracle Outside In Excel MergeCells Record Parsing Remote Code Execution Vulnerability

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Message-ID: <04F9AFDCA6560B42B91DB1A429B7D0DE05532E46@G1W3778.americas.hpqcorp.net>
Date: Wed, 22 Aug 2012 16:08:34 +0000
From: ZDI Disclosures <zdi-disclosures@...pingpoint.com>
To: "'full-disclosure@...ts.grok.org.uk'" <full-disclosure@...ts.grok.org.uk>,
  "'bugtraq@...urityfocus.com'" <bugtraq@...urityfocus.com>
CC: ZDI Disclosures <zdi-disclosures@...com>
Subject: ZDI-12-152 :  Oracle Outside In Excel MergeCells Record Parsing
 Remote Code Execution Vulnerability

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ZDI-12-152 :  Oracle Outside In Excel MergeCells Record Parsing Remote Code
Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-12-152
August 22, 2012

- -- CVE ID:

- -- CVSS:
10, AV:N/AC:L/Au:N/C:C/I:C/A:C

- -- Affected Vendors:
Oracle

- -- Affected Products:
Oracle Outside In

- -- Vulnerability Details:
This vulnerability allows remote attackers to execute arbitrary code on
vulnerable installations of applications that utilize Oracle's Outside In
Technology. User interaction is required to exploit this vulnerability in
that the target must visit open a malicious file.

The specific flaw exists within the parsing of Excel files. When handling
the MergeCells record, the process does not properly validate size values
which can lead to an integer overflow. The resulting value is used to
allocate a heap buffer which can be corrupted by an attacker to execute
arbitrary code under the context of the application.

- -- Vendor Response:
Oracle has issued an update to correct this vulnerability. More details can
be found at:
http://www.oracle.com/technetwork/topics/security/cpuapr2012-366314.html

- -- Disclosure Timeline:
2011-12-19 - Vulnerability reported to vendor
2012-08-22 - Coordinated public release of advisory

- -- Credit:
This vulnerability was discovered by:
* gwslabs.com

- -- 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/

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