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/ Follow the ZDI on Twitter: http://twitter.com/thezdi