// For flags

CVE-2016-4290

 

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 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.

Cuando se abre un Hangul HShow Document (.hpt) y se procesa una estructura dentro del documento, Hancom Office 2014 tratará de asignar espacio para un bloque de datos dentro del archivo. Al calcular esta longitud, la aplicación usará un valor desde el archivo y le añade una constante sin verificar si la suma de la constante provocará que el entero se desborde lo que provocará que el búfer sea subdimensionado cuando la aplicación trate de copiar datos del archivo en él. Esto permite a uno sobreescribir datos contiguos en la memoria dinámica lo que puede conducir a una 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-190: Integer Overflow or Wraparound
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