PT-2017-8461 · Hancom · Hancom Office 2014

Published 2017-01-06 · Updated 2017-01-11 · CVE-2016-4294

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Hancom Office 2014

Description The issue arises when opening a Hangul Hcell Document (.cell) and processing a property record within the Workbook stream. Hancom Office 2014 attempts to allocate space for an element using a length from the file, but when copying user-supplied data to this buffer, it uses a different size. This discrepancy leads to a heap-based buffer overflow, which can result in code execution under the context of the application.

Recommendations For Hancom Office 2014, update to a version that fixes this issue, as the current version is prone to a heap-based buffer overflow when handling specific file types. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

CVE-2016-4294

Affected Products

Hancom Office 2014

References · 4

• 🔥 http://talosintelligence.com/reports/TALOS-2016-0149 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2016-4294 · Security Note
• https://osv.dev/vulnerability/CVE-2016-4294 · Vendor Advisory
• http://securityfocus.com/bid/92327 · Note