iDefense Security Advisory 05.14.09 - Remote exploitation of multiple buffer overflow vulnerabilities in Oracle Corp.'s Outside In Technology, as included in various vendors' software distributions, allow attackers to execute arbitrary code. Two vulnerabilities exist due to a lack of bounds checking when processing specially crafted Microsoft Excel spreadsheet files. The two issues exist in two distinct functions. The two vulnerabilities are nearly identical, with the differentiating factor being the value of a flag bit within a record of the file. If the bit is set, the code path to the first vulnerable function is taken. Otherwise, the code path to the second vulnerable function is taken.
453d22e035785f3551f5dd9b4c765c0be2b84487078feb070cf8fca38359966ciDefense Security Advisory 05.14.09 - Remote exploitation of a buffer overflow vulnerability in Oracle Corp.'s Outside In Technology, as included in various vendors' software distributions, allows attacker to execute arbitrary code. This vulnerability exists due to the lack of bounds checking when processing certain records within a Microsoft Excel spreadsheet. Upon entering the vulnerable function, data is copied from a heap buffer into a stack buffer without ensuring that the data will fit. By crafting an Excel spreadsheet file properly, it is possible to write beyond the bounds of the stack buffer. The resulting stack corruption leads to arbitrary code execution.
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