Vulnerability Details CVE-2016-4295
When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.005
EPSS Ranking 63.2%
CVSS Severity
CVSS v3 Score 7.8
CVSS v2 Score 6.8
References
Products affected by CVE-2016-4295
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cpe:2.3:a:hancom:hancom_office_2014:9.1.0.2176