CVE-2018-18993

OMRON CX-One CXP File Parsing Stack-based Buffer Overflow Code Execution Vulnerability

Severity Score

7.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Two stack-based buffer overflow vulnerabilities have been discovered in CX-One Versions 4.42 and prior (CX-Programmer Versions 9.66 and prior and CX-Server Versions 5.0.23 and prior). When processing project files, the application allows input data to exceed the buffer. An attacker could use a specially crafted project file to overflow the buffer and execute code under the privileges of the application.

Se han descubierto dos vulnerabilidades de desbordamiento de búfer basado en pila en CX-One, en versiones 4.42 y anteriores (CX-Programmer en versiones 9.66 y anteriores y CX-Server en versiones 5.0.23 y anteriores). Al procesar archivos de proyecto, la aplicación permite que los datos de entrada excedan el búfer. Un atacante podría emplear un archivo de proyecto manipulado para desbordar el búfer y ejecutar código con los privilegios de la aplicación.

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of OMRON CX-One. User interaction is required to exploit this vulnerability in that the target must open a malicious file.
The specific flaw exists within the parsing of CXP files. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

*Credits: Esteban Ruiz (mr_me) of Source Incite

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

2018-11-06 CVE Reserved
2018-12-04 CVE Published
2024-04-26 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-121: Stack-based Buffer Overflow
CWE-787: Out-of-bounds Write

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/106106	Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-338-01	Third Party Advisory

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
Omron Search vendor "Omron"		Cx-one Search vendor "Omron" for product "Cx-one"				<= 4.42 Search vendor "Omron" for product "Cx-one" and version " <= 4.42"		-		Affected
Omron Search vendor "Omron"		Cx-programmer Search vendor "Omron" for product "Cx-programmer"				<= 9.66 Search vendor "Omron" for product "Cx-programmer" and version " <= 9.66"		-		Affected
Omron Search vendor "Omron"		Cx-server Search vendor "Omron" for product "Cx-server"				<= 5.0.23 Search vendor "Omron" for product "Cx-server" and version " <= 5.0.23"		-		Affected