CVE-2021-20125

Severity Score

9.8

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An arbitrary file upload and directory traversal vulnerability exists in the file upload functionality of DownloadFileServlet in Draytek VigorConnect 1.6.0-B3. An unauthenticated attacker could leverage this vulnerability to upload files to any location on the target operating system with root privileges.

Se presenta una vulnerabilidad de carga arbitraria de archivos y de salto de directorio en la funcionalidad upload functionality de DownloadFileServlet en Draytek VigorConnect versión 1.6.0-B3. Un atacante no autenticado podría aprovechar esta vulnerabilidad para subir archivos a cualquier ubicación en el sistema operativo de destino con privilegios de root

*Credits: N/A

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

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-12-17 CVE Reserved
2021-10-13 CVE Published
2024-08-03 CVE Updated
2024-08-03 First Exploit
2024-09-04 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-434: Unrestricted Upload of File with Dangerous Type

CAPEC

References (1)

URL	Tag	Source

URL	Date	SRC
https://www.tenable.com/security/research/tra-2021-42	2024-08-03

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
Draytek Search vendor "Draytek"		Vigorconnect Search vendor "Draytek" for product "Vigorconnect"				1.6.0 Search vendor "Draytek" for product "Vigorconnect" and version "1.6.0"		beta3		Affected