VDB-95077 · CVE-2016-4294 · BID 92327

Hancom Office 2014 Hangul Hcell Document memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability has been found in Hancom Office 2014 and classified as critical. This issue affects some unknown processing of the component Hangul Hcell Document Handler. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2016-4294. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability classified as critical was found in Hancom Office 2014. Affected by this vulnerability is an unknown part of the component Hangul Hcell Document Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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.

The bug was discovered 08/04/2016. The weakness was disclosed 01/06/2017 by Cisco with Cisco Talos (Website). The advisory is shared at securityfocus.com. This vulnerability is known as CVE-2016-4294 since 04/27/2016. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 155 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 92327†). The entries VDB-95078, VDB-95079 and VDB-100351 are pretty similar. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 7.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/27/2016 🔍
08/04/2016 +99 days 🔍
08/04/2016 +0 days 🔍
01/06/2017 +155 days 🔍
01/06/2017 +0 days 🔍
01/07/2017 +1 days 🔍
04/20/2025 +3025 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Cisco
Organization: Cisco Talos
Status: Not defined

CVE: CVE-2016-4294 (🔍)
GCVE (CVE): GCVE-0-2016-4294
GCVE (VulDB): GCVE-100-95077
SecurityFocus: 92327 - Hancom Office 2014 VP Multiple Local Arbitrary Code Execution Vulnerabilities
OSVDB: - CVE-2016-4294 - Hancom - Office - Buffer Overflow Issue

See also: 🔍

Entryinfo

Created: 01/07/2017 12:50
Updated: 04/20/2025 09:18
Changes: 01/07/2017 12:50 (59), 07/15/2020 16:09 (6), 04/20/2025 09:18 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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