Known Exploited Vulnerability
7.5
HIGH
CVE-2021-20124
Draytek VigorConnect Path Traversal Vulnerability - [Actively Exploited]
Description

A local file inclusion vulnerability exists in Draytek VigorConnect 1.6.0-B3 in the file download functionality of the WebServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

INFO

Published Date :

Oct. 13, 2021, 4:15 p.m.

Last Modified :

Sept. 5, 2024, 1:30 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
CISA Notification
CISA KEV (Known Exploited Vulnerabilities)

For the benefit of the cybersecurity community and network defenders—and to help every organization better manage vulnerabilities and keep pace with threat activity—CISA maintains the authoritative source of vulnerabilities that have been exploited in the wild.

Description :

Draytek VigorConnect contains a path traversal vulnerability in the file download functionality of the WebServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.

Required Action :

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

Notes :

https://www.draytek.com/about/security-advisory/vigorconnect-software-security-vulnerability-(cve-2021-20123-cve-2021-20129)

Public PoC/Exploit Available at Github

CVE-2021-20124 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-20124 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Draytek vigorconnect
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-20124.

URL Resource
https://www.tenable.com/security/research/tra-2021-42 Exploit Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

essential templates for kenzer [DEPRECATED]

kenzer vulnerabilities kenzer-templates arpsyndicate

Python Shell Ruby

Updated: 1 month ago
106 stars 32 fork 32 watcher
Born at : Sept. 18, 2020, 9:03 p.m. This repo has been linked 1653 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-20124 vulnerability anywhere in the article.

  • TheCyberThrone
CISA KEV Update Part II – September 2024.

The US CISA added below vulnerabilities to the Known Exploited Vulnerability Catalog based on the evidence of active exploitationCVE-2024-40766 SonicWall SonicOS contains an improper access control vu ... Read more

Published Date: Sep 10, 2024 (1 week, 2 days ago)
  • The Hacker News
GeoServer Vulnerability Targeted by Hackers to Deliver Backdoors and Botnet Malware

Cryptocurrency / APT Attack A recently disclosed security flaw in OSGeo GeoServer GeoTools has been exploited as part of multiple campaigns to deliver cryptocurrency miners, botnet malware such as Con ... Read more

Published Date: Sep 06, 2024 (1 week, 5 days ago)
  • Cybersecurity News
CISA Issues Alert: Three Actively Exploited Vulnerabilities Demand Immediate Attention

The Cybersecurity and Infrastructure Security Agency (CISA) has added three critical vulnerabilities to its Known Exploited Vulnerabilities (KEV) catalog, highlighting their active exploitation in the ... Read more

Published Date: Sep 04, 2024 (2 weeks, 1 day ago)

The following table lists the changes that have been made to the CVE-2021-20124 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • Modified Analysis by [email protected]

    Sep. 05, 2024

    Action Type Old Value New Value
  • CVE CISA KEV Update by 9119a7d8-5eab-497f-8521-727c672e3725

    Sep. 04, 2024

    Action Type Old Value New Value
    Added Date Added 2024-09-03
    Added Required Action Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
    Added Vulnerability Name Draytek VigorConnect Path Traversal Vulnerability
    Added Due Date 2024-09-24
  • CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0

    Sep. 03, 2024

    Action Type Old Value New Value
    Added CWE CISA-ADP CWE-22
    Added CVSS V3.1 CISA-ADP AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 12, 2022

    Action Type Old Value New Value
    Changed CWE CWE-668 CWE-22
  • Initial Analysis by [email protected]

    Oct. 19, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:C/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://www.tenable.com/security/research/tra-2021-42 No Types Assigned https://www.tenable.com/security/research/tra-2021-42 Exploit, Third Party Advisory
    Added CWE NIST CWE-668
    Added CPE Configuration OR *cpe:2.3:a:draytek:vigorconnect:1.6.0:beta3:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-20124 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

49.18 }} 48.32%

score

0.97564

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability