CVE-2016-4298
When calculating this length, an integer overflow can be made to occur which will cause the buffer to be undersized when the application tries to copy file data into the object containing this structure.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.34%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a list of elements using a length from the file. When calculating this length, an integer overflow can be made to occur which will cause the buffer to be undersized when the application tries to copy file data into the object containing this structure. This allows one to overwrite contiguous data in the heap 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
- 2.34% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-190
- Affected
- hancom/hancom office 2014
- Source
- cret@cert.org
References
- http://www.securityfocus.com/bid/92325
- http://www.talosintelligence.com/reports/TALOS-2016-0144/Exploit, Technical Description, Third Party Advisory, VDB Entry
- http://www.securityfocus.com/bid/92325
- http://www.talosintelligence.com/reports/TALOS-2016-0144/Exploit, Technical Description, Third Party Advisory, VDB Entry
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.