VDB-95074 · CVE-2016-4290 · BID 92325

Hancom Office 2014 Hangul HShow Document integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in Hancom Office 2014. Affected by this issue is some unknown functionality of the component Hangul HShow Document Handler. Executing a manipulation can lead to integer overflow. The identification of this vulnerability is CVE-2016-4290. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Hancom Office 2014. It has been declared as critical. This vulnerability affects an unknown function of the component Hangul HShow Document Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

When opening a Hangul HShow Document (.hpt) and processing a structure within the document, Hancom Office 2014 will attempt to allocate space for a block of data within the file. When calculating this length, the application will use a value from the file and add a constant to it without checking whether the addition of the constant will cause the integer to overflow which will cause the buffer to be undersized when the application tries to copy file data into it. This allows one to overwrite contiguous data in the heap which can lead to code-execution under the context of the application.

The bug was discovered 08/04/2016. The weakness was shared 01/06/2017 by Cisco with Cisco Talos (Website). The advisory is available at securityfocus.com. This vulnerability was named CVE-2016-4290 since 04/27/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not 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 92325†). The entries VDB-95075, VDB-95076 and VDB-95080 are related to this item. If you want to get best quality of vulnerability data, you may have to visit 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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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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-2016-4290 (🔍)
GCVE (CVE): GCVE-0-2016-4290
GCVE (VulDB): GCVE-100-95074
SecurityFocus: 92325 - Hancom Office 2014 VP Multiple Local Arbitrary Code Execution Vulnerabilities
OSVDB: - CVE-2016-4290 - Hancom - Office - Integer Overflow Issue

See also: 🔍

Entryinfo

Created: 01/07/2017 12:50
Updated: 04/20/2025 09:18
Changes: 01/07/2017 12:50 (60), 07/15/2020 16:02 (6), 04/20/2025 09:18 (16)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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