CVE-2016-4296 When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") character at the end of the string and wr...
HighCVSS 7.8
EPSS 2.2%
- Published
- Updated
- Exploit status
- No public exploit known
Description
When opening a Hangul Hcell Document (.cell) and processing a record that uses the CSSValFormat object, Hancom Office 2014 will search for an underscore ("_") character at the end of the string and write a null terminator after it. If the character is at the very end of the string, the application will mistakenly write the null-byte outside the bounds of its destination. This can result in heap corruption that can lead code execution under the context of the application
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| hancom office 2014 | <= 9.1.0.2176 | No fix listed |
| Hancom Office | = 2014 VP Trial HCell.exe Product version: 9.1.0.2176, HCellApp.dll Product version: 9.1.0.2176 HCellBook.dll Product version: 9.1.0.2176 | No fix listed |
References
- 92327 vdb-entry
- www.talosintelligence.com exploit technical-description third-party-advisory vdb-entry