CVE-2021-20123
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 DownloadFileServlet 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 :
Nov. 21, 2024, 5:45 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
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.
Draytek VigorConnect contains a path traversal vulnerability in the DownloadFileServlet endpoint. An unauthenticated attacker could leverage this vulnerability to download arbitrary files from the underlying operating system with root privileges.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
https://www.draytek.com/about/security-advisory/vigorconnect-software-security-vulnerability-(cve-2021-20123-cve-2021-20129); https://nvd.nist.gov/vuln/detail/CVE-2021-20123
Public PoC/Exploit Available at Github
CVE-2021-20123 has a 2 public PoC/Exploit available at Github.
Go to the Public Exploits tab to see the list.
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-2021-20123.
| URL | Resource |
|---|---|
| https://www.tenable.com/security/research/tra-2021-42 | Exploit Third Party Advisory |
| 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).
Ostorlab KEV: One-command to detect most remotely known exploitable vulnerabilities. Sourced from CISA KEV, Google's Tsunami, Ostorlab's Asteroid and Bug Bounty programs.
cisa-kev vulnerability 0day cisa exploits
essential templates for kenzer [DEPRECATED]
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Python Shell Ruby
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20123 vulnerability anywhere in the article.
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Dark Reading
Thousands of DrayTek Routers at Risk From 14 Vulnerabilities
Source: PeterPhoto123 via ShutterstockPotentially tens of thousands of DrayTek routers, including models that many businesses and government agencies use, are at heightened risk of attack via 14 newly ... Read more
-
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
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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
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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
The following table lists the changes that have been made to the
CVE-2021-20123 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.
-
CVE Modified by af854a3a-2127-422b-91ae-364da2661108
Nov. 21, 2024
Action Type Old Value New Value Added Reference https://www.tenable.com/security/research/tra-2021-42 -
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
Aug. 30, 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:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20123 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-20123
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
45.92 }} -3.53%
score
0.97494
percentile