CVE-2021-22656

Advantech iView CommandServlet Directory Traversal Information Disclosure Vulnerability

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Advantech iView versions prior to v5.7.03.6112 are vulnerable to directory traversal, which may allow an attacker to read sensitive files.

Las versiones de Advantech iView anteriores a v5.7.03.6112, son vulnerables al salto de directorios, lo que puede permitir a un atacante leer archivos confidenciales

This vulnerability allows remote attackers to disclose sensitive information on affected installations of Advantech iView. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the CommandServlet class. 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 disclose information in the context of SYSTEM.

*Credits: Anonymous

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-01-05 CVE Reserved
2021-02-11 CVE Published
2024-08-03 CVE Updated
2024-09-25 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

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

CAPEC

References (2)

URL	Tag	Source
https://us-cert.cisa.gov/ics/advisories/icsa-21-040-02	Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-189	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"		Iview Search vendor "Advantech" for product "Iview"				< 5.7.03.6112 Search vendor "Advantech" for product "Iview" and version " < 5.7.03.6112"		-		Affected