CVE-2016-4295
The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.23%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.0
- 7.8 HIGHCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 2.23% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-119
- Affected
- hancom/hancom office 2014
- Source
- cret@cert.org
References
- http://www.securityfocus.com/bid/92327
- http://www.talosintelligence.com/reports/TALOS-2016-0150/Exploit, Technical Description, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/92327
- http://www.talosintelligence.com/reports/TALOS-2016-0150/Exploit, Technical Description, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.