What is the vulnerability ID for this local file inclusion vulnerability?

The vulnerability ID for this local file inclusion vulnerability is CVE-2021-20123.

What is the severity level of CVE-2021-20123?

CVE-2021-20123 has a severity level of 7.5 (high).

What is the affected software for CVE-2021-20123?

The affected software for CVE-2021-20123 is Draytek VigorConnect 1.6.0-B3.

How does CVE-2021-20123 work?

CVE-2021-20123 allows an unauthenticated attacker to download arbitrary files with root privileges by exploiting the file download functionality of the DownloadFileServlet endpoint in Draytek VigorConnect 1.6.0-B3.

Is there a fix available for CVE-2021-20123?

Yes, it is recommended to upgrade to a fixed version of Draytek VigorConnect to mitigate CVE-2021-20123.

Vulnerability/
CVE-2021-20123

Exploited

high

7.8

CWE

13/10/2021

21/11/2024

CVE-2021-20123: Draytek VigorConnect Path Traversal Vulnerability

First published: Wed Oct 13 2021(Updated: )

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

Credit: vulnreport@tenable.com vulnreport@tenable.com

Affected Software	Affected Version	How to fix
Draytek VigorConnect	=1.6.0-beta3
	=1.6.0-beta3
Draytek VigorConnect

Remedy

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

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Reference Links

Frequently Asked Questions

What is the vulnerability ID for this local file inclusion vulnerability?
The vulnerability ID for this local file inclusion vulnerability is CVE-2021-20123.
What is the severity level of CVE-2021-20123?
CVE-2021-20123 has a severity level of 7.5 (high).
What is the affected software for CVE-2021-20123?
The affected software for CVE-2021-20123 is Draytek VigorConnect 1.6.0-B3.
How does CVE-2021-20123 work?
CVE-2021-20123 allows an unauthenticated attacker to download arbitrary files with root privileges by exploiting the file download functionality of the DownloadFileServlet endpoint in Draytek VigorConnect 1.6.0-B3.
Is there a fix available for CVE-2021-20123?
Yes, it is recommended to upgrade to a fixed version of Draytek VigorConnect to mitigate CVE-2021-20123.

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agent/description
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collector/nvd-api
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agent/software-canonical-lookup
agent/last-modified-date
collector/mitre-cve
source/MITRE
collector/nvd-cve
exploited/true
collector/cisa-known-exploited
source/CISA
vendor/draytek
canonical/draytek vigorconnect
version/draytek vigorconnect/1.6.0-beta3

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