Advisory Details

February 8th, 2012

Adobe Reader BMP Resource Signedness Remote Code Execution Vulnerability

CVE ID	CVE-2011-4373
CVSS SCORE	7.5, AV:N/AC:L/Au:N/C:P/I:P/A:P
AFFECTED VENDORS	Adobe
AFFECTED PRODUCTS	Reader
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['12017']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Adobe Reader X. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file. The specific flaw exists within 2d.x3d, which is Adobe Reader's code responsible for processing BMP files. When passing a negative size parameter in the 'colors' field, a series of signed comparisons will be averted, and the overly large size parameter is passed to a memcpy(). This will cause a heap-based buffer overflow, allowing an attacker to execute code under the context of the user.
ADDITIONAL DETAILS	Adobe has issued an update to correct this vulnerability. More details can be found at: http://www.adobe.com/support/security/bulletins/apsb12-01.html
DISCLOSURE TIMELINE	2011-10-28 - Vulnerability reported to vendor 2012-02-08 - Coordinated public release of advisory
CREDIT	Alin Rad Pop

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