VDB-184378 · CVE-2021-20124 · tra-2021-42

Draytek VigorConnect 1.6.0-B3 WebServlet Endpoint file inclusion

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.4	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Draytek VigorConnect 1.6.0-B3. The impacted element is an unknown function of the component WebServlet Endpoint. Executing a manipulation can lead to file inclusion. This vulnerability appears as CVE-2021-20124. In addition, an exploit is available.

Detailsinfo

A vulnerability has been found in Draytek VigorConnect 1.6.0-B3 (Router Operating System) and classified as critical. This vulnerability affects an unknown code block of the component WebServlet Endpoint. The manipulation with an unknown input leads to a file inclusion vulnerability. The CWE definition for the vulnerability is CWE-73. The product allows user input to control or influence paths or file names that are used in filesystem operations. As an impact it is known to affect confidentiality.

The weakness was presented 10/13/2021 as tra-2021-42. The advisory is available at tenable.com. This vulnerability was named CVE-2021-20124 since 12/17/2020. Technical details are unknown but an exploit is available.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 211636 (Draytek VigorConnect Unauthenticated LFI (CVE-2021-20124)), which helps to determine the existence of the flaw in a target environment. This issue was added on 09/03/2024 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 09/24/2024:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (211636). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Router Operating System

Vendor

Draytek

Name

VigorConnect

Version

1.6.0-B3

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 4.3
VulDB Temp Score: 4.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: File inclusion
CWE: CWE-73
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Nessus ID: 211636
Nessus Name: Draytek VigorConnect Unauthenticated LFI (CVE-2021-20124)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

12/17/2020 🔍
10/13/2021 +299 days 🔍
10/13/2021 +0 days 🔍
11/20/2024 +1134 days 🔍

Sourcesinfo

Advisory: tra-2021-42
Status: Confirmed

CVE: CVE-2021-20124 (🔍)
GCVE (CVE): GCVE-0-2021-20124
GCVE (VulDB): GCVE-100-184378
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/13/2021 21:22
Updated: 11/20/2024 19:38
Changes: 10/13/2021 21:22 (39), 10/20/2021 10:52 (1), 09/03/2024 20:44 (42), 09/03/2024 23:58 (14), 09/30/2024 05:12 (1), 11/20/2024 19:38 (4)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.