CVE-2018-7495

Advantech WebAccess Node webvrpcs drawsrv Arbitrary File Deletion Vulnerability

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

In Advantech WebAccess versions V8.2_20170817 and prior, WebAccess versions V8.3.0 and prior, WebAccess Dashboard versions V.2.0.15 and prior, WebAccess Scada Node versions prior to 8.3.1, and WebAccess/NMS 2.0.3 and prior, an external control of file name or path vulnerability has been identified, which may allow an attacker to delete files.

En Advantech WebAccess en versiones V8.2_20170817 y anteriores, WebAccess en versiones V8.3.0 y anteriores, WebAccess Dashboard en versiones V.2.0.15 y anteriores, WebAccess Scada Node en versiones anteriores a la 8.3.1 y WebAccess/NMS 2.0.3 y anteriores, se ha identificado una vulnerabilidad de control externo del nombre de archivo o ruta que podría permitir que un atacante elimine archivos.

This vulnerability allows remote attackers to delete arbitrary files on vulnerable installations of Advantech WebAccess Node. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the implementation of the 0x2715 IOCTL in the webvrpcs process. The issue results from the lack of proper validation of a user-supplied path prior to using it in file operations. An attacker can leverage this functionality to delete files under the context of Administrator.

*Credits: Steven Seeley (mr_me) of Offensive Security

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-02-26 CVE Reserved
2018-05-15 CVE Published
2024-03-24 EPSS Updated
2024-09-17 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-73: External Control of File Name or Path

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/104190	Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-135-01	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
Advantech Search vendor "Advantech"		Webaccess Search vendor "Advantech" for product "Webaccess"				<= 8.2_20170817 Search vendor "Advantech" for product "Webaccess" and version " <= 8.2_20170817"		-		Affected
Advantech Search vendor "Advantech"		Webaccess Search vendor "Advantech" for product "Webaccess"				<= 8.3.0 Search vendor "Advantech" for product "Webaccess" and version " <= 8.3.0"		-		Affected
Advantech Search vendor "Advantech"		Webaccess Dashboard Search vendor "Advantech" for product "Webaccess Dashboard"				<= 2.0.15 Search vendor "Advantech" for product "Webaccess Dashboard" and version " <= 2.0.15"		-		Affected
Advantech Search vendor "Advantech"		Webaccess Scada Search vendor "Advantech" for product "Webaccess Scada"				< 8.3.1 Search vendor "Advantech" for product "Webaccess Scada" and version " < 8.3.1"		-		Affected
Advantech Search vendor "Advantech"		Webaccess\/nms Search vendor "Advantech" for product "Webaccess\/nms"				<= 2.0.3 Search vendor "Advantech" for product "Webaccess\/nms" and version " <= 2.0.3"		-		Affected