CVE-2016-4294 Information

Description

When opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream Hancom Office 2014 will attempt to allocate space for an element using a length from the file. When copying user-supplied data to this buffer however the application will use a different size which leads to a heap-based buffer overflow. This vulnerability can lead to code-execution under the context of the application.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

http://www.securityfocus.com/bid/92327 http://www.talosintelligence.com/reports/TALOS-2016-0149/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8