CVE-2021-20090
Arcadyan Buffalo Firmware Path Traversal Vulnerabi - [Actively Exploited]
Description
A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.
INFO
Published Date :
April 29, 2021, 3:15 p.m.
Last Modified :
July 25, 2024, 5:32 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
5.9
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.
Arcadyan Buffalo firmware contains a path traversal vulnerability that could allow unauthenticated, remote attackers to bypass authentication and access sensitive information. This vulnerability affects multiple routers across several different vendors.
Apply updates per vendor instructions.
Public PoC/Exploit Available at Github
CVE-2021-20090 has a 9 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-2021-20090
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.
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-2021-20090.
| URL | Resource |
|---|---|
| https://www.kb.cert.org/vuls/id/914124 | Third Party Advisory US Government Resource |
| https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ | Exploit Third Party Advisory |
| https://www.tenable.com/security/research/tra-2021-13 | 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).
None
Slides and other reference material for RVASec 2024 presentation
None
CSS HTML JavaScript
poc集合(持续更新ing)
A Common Vulnerability PoC Knowledge Base一个普遍漏洞POC知识库
vulnerability
cve-2019-11510, cve-2019-19781, cve-2020-5902, cve-2021-1497, cve-2021-20090, cve-2021-22006, cve-2021-22205, cve-2021-26084, cve-2021-26855, cve-2021-26857, cve-2021–26857, cve-2021–26858, cve-2021–26865
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
一个漏洞POC知识库 目前数量 1000+
poc
essential templates for kenzer [DEPRECATED]
kenzer vulnerabilities kenzer-templates arpsyndicate
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-2021-20090 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20090 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]
Jul. 25, 2024
Action Type Old Value New Value Changed Reference Type https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ No Types Assigned https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ Exploit, Third Party Advisory Changed CPE Configuration AND OR cpe:2.3:h:buffalo:wsr-2533dhpl2-bk:-:*:*:*:*:*:*:* OR *cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.02 AND OR *cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.02 OR cpe:2.3:h:buffalo:wsr-2533dhpl2-bk:-:*:*:*:*:*:*:* Changed CPE Configuration AND OR cpe:2.3:h:buffalo:wsr-2533dhp3-bk:-:*:*:*:*:*:*:* OR *cpe:2.3:o:buffalo:wsr-2533dhp3-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.24 AND OR *cpe:2.3:o:buffalo:wsr-2533dhp3-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.24 OR cpe:2.3:h:buffalo:wsr-2533dhp3-bk:-:*:*:*:*:*:*:* -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Oct. 18, 2023
Action Type Old Value New Value Added Reference https://www.secpod.com/blog/arcadyan-based-routers-and-modems-under-active-exploitation/ [No Types Assigned] -
Modified Analysis by [email protected]
Apr. 26, 2022
Action Type Old Value New Value Changed Reference Type https://www.kb.cert.org/vuls/id/914124 No Types Assigned https://www.kb.cert.org/vuls/id/914124 Third Party Advisory, US Government Resource Changed Reference Type https://www.tenable.com/security/research/tra-2021-13 Third Party Advisory https://www.tenable.com/security/research/tra-2021-13 Exploit, Third Party Advisory -
CVE Modified by [email protected]
Jul. 20, 2021
Action Type Old Value New Value Added Reference https://www.kb.cert.org/vuls/id/914124 [No Types Assigned] -
Initial Analysis by [email protected]
May. 08, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:P/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Changed Reference Type https://www.tenable.com/security/research/tra-2021-13 No Types Assigned https://www.tenable.com/security/research/tra-2021-13 Third Party Advisory Added CWE NIST CWE-22 Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wsr-2533dhpl2-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.02 OR cpe:2.3:h:buffalo:wsr-2533dhpl2-bk:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:buffalo:wsr-2533dhp3-bk_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.24 OR cpe:2.3:h:buffalo:wsr-2533dhp3-bk:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20090 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-2021-20090
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
97.17 }} 0.06%
score
0.99851
percentile