| CVE ID | CVE-2011-1290 |
| CVSS SCORE | 9.0, AV:N/AC:L/Au:N/C:P/I:P/A:C |
| AFFECTED VENDORS |
WebKit |
| AFFECTED PRODUCTS |
WebKit |
| TREND MICRO CUSTOMER PROTECTION | Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['11087']. 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 Webkit. 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 the WebKit library's implementation of a CSS style. When totaling the length of it's string elements, the library will store the result into a 32bit integer. This value will be used for an allocation and then later will be used to initialize the allocated buffer. Due to the number of elements being totaled being variable, this will allow an aggressor to provide as many elements as necessary in order to cause the integer value to wrap causing an under-allocation. Initialization of this data will then cause a heap-based buffer overflow. This can lead to code execution under the context of the application. |
| ADDITIONAL DETAILS |
Apple patch on April 14, 2011: Webkit fix: |
| DISCLOSURE TIMELINE |
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| CREDIT | Anonymous Vincenzo Iozzo, Willem Pinckaers, and Ralf-Philipp Weinmann |
