CVE-2017-2789

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

When copying filedata into a buffer, JustSystems Ichitaro Office 2016 Trial will calculate two values to determine how much data to copy from the document. If both of these values are larger than the size of the buffer, the application will choose the smaller of the two and trust it to copy data from the file. This value is larger than the buffer size, which leads to a heap-based buffer overflow. This overflow corrupts an offset in the heap used in pointer arithmetic for writing data and can lead to code execution under the context of the application.

Cuando se copian datos de archivos en un búfer, JustSystems Ichitaro Office 2016 Trial calculará dos valores para determinar cuantos datos copiar desde el documento. Si ambos valores son más grandes que el tamaño del búfer, la aplicación escogerá el más pequeño de los dos y confiará en él para copiar datos desde el archivo. Este valor es mayor que el tamaño de búfer, lo que conduce a un desbordamiento de búfer basado en memoria dinámica. Este desbordamiento corrompe un desplazamiento en la memoria dinámica utilizada en la aritmética de puntero para escribir datos y puede conducir a ejecución de código bajo el contexto de la aplicación.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-12-01 CVE Reserved
2017-02-24 CVE Published
2023-03-08 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/96438	Vdb Entry
http://www.talosintelligence.com/reports/TALOS-2016-0196	X_refsource_misc

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Justsystems Search vendor "Justsystems"		Ichitaro Search vendor "Justsystems" for product "Ichitaro"				*		-		Affected