CVE-2017-16720

Advantech WebAccess DelIcon Directory Traversal File Deletion Vulnerability

Severity Score

9.8

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

A Path Traversal issue was discovered in WebAccess versions 8.3.2 and earlier. An attacker has access to files within the directory structure of the target device.

Se ha descubierto un problema de salto de directorio en WebAccess en versiones 8.3.2 y anteriores. Un atacante tiene acceso a archivos en la estructura de directorio del dispositivo objetivo.

This vulnerability allows remote attackers to delete arbitrary files on vulnerable installations of Advantech WebAccess. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the DelIcon method in gmicons.asp. 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 vulnerability to delete files accessible to the web service.

Advantech WebAccess versions less than 8.3 suffer from directory traversal and remote code execution vulnerabilities.

*Credits: Zhou Yu

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

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-11-09 CVE Reserved
2018-01-05 CVE Published
2023-10-10 First Exploit
2024-05-22 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (6)

URL	Tag	Source
http://www.securityfocus.com/bid/102424	Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-18-004-02	Broken Link
https://www.tenable.com/security/research/tra-2018-23	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-18-024	Third Party Advisory

URL	Date	SRC
https://www.exploit-db.com/exploits/44278	2024-08-05
https://github.com/CN016/WebAccess-CVE-2017-16720-	2023-10-10

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"				<= 8.3.2 Search vendor "Advantech" for product "Webaccess" and version " <= 8.3.2"		-		Affected