Heap-based Buffer Overflow in Hancom Office 2014 Hangul Hcell Document Processing

Heap-based Buffer Overflow in Hancom Office 2014 Hangul Hcell Document Processing

CVE-2016-4294 · MEDIUM Severity

AV:N/AC:M/AU:N/C:P/I:P/A:P

When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream, Hancom Office 2014 will attempt to allocate space for an element using a length from the file. When copying user-supplied data to this buffer, however, the application will use a different size which leads to a heap-based buffer overflow. This vulnerability can lead to code-execution under the context of the application.

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