// For flags

CVE-2016-4295

 

Severity Score

7.8
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

When opening a Hangul Hcell Document (.cell) and processing a particular record within the Workbook stream, an index miscalculation leading to a heap overlow can be made to occur in Hancom Office 2014. The vulnerability occurs when processing data for a formula used to render a chart via the HncChartPlugin.hplg library. Due to a lack of bounds-checking when incrementing an index that is used for writing into a buffer for formulae, the application can be made to write pointer data outside its bounds which can lead to code execution under the context of the application.

Cuando se abre un Hangul Hcell Document (.cell) y se procesa un registro en particular dentro del Workbook stream, puede hacer que ocurra un error de cálculo del índice que conduce a un desbordamiento de la memoria dinámica en Hancom Office 2014. La vulnerabilidad ocurre cuando se procesan datos para una fórmula empleada para representar un gráfico a través de la librería HncChartPlugin.hplg. Debido a la falta de verificación de límites cuando se incrementa un índice que es utilizado para escribir en un búfer para fórmulas, se puede hacer que la aplicación escriba datos del puntero fuera de sus límites lo que puede conducir a ejecución de código bajo el contexto de la aplicación.

*Credits: N/A
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2016-04-27 CVE Reserved
  • 2017-01-06 CVE Published
  • 2023-08-10 EPSS Updated
  • 2024-08-06 CVE Updated
  • 2024-08-06 First Exploit
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Hancom
Search vendor "Hancom"
 Hancom Office 2014
Search vendor "Hancom" for product "Hancom Office 2014"
 <= 9.1.0.2176
Search vendor "Hancom" for product "Hancom Office 2014" and version " <= 9.1.0.2176"
-
Affected