hwpapp.dll in Hangul Word Processor allows remote attackers to execute arbitrary code via a crafted heap spray, and by leveraging a "type confusion" via an HWPX file containing a crafted para text tag.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://www.securityfocus.com/bid/76694 | third party advisory vdb entry |
| https://www.fireeye.com/blog/threat-research/2015/09/zero-day_hwp_exploit.html | third party advisory |
| http://www.hancom.com/cs_center/csDownload.do | vendor advisory |
| https://www.fireeye.com/content/dam/fireeye-www/global/en/blog/threat-research/FireEye_HWP_ZeroDay.pdf | third party advisory |