CVE-2021-27342
D-Link DIR-842 Telnetd Authentication Bypass
Description
An authentication brute-force protection mechanism bypass in telnetd in D-Link Router model DIR-842 firmware version 3.0.2 allows a remote attacker to circumvent the anti-brute-force cool-down delay period via a timing-based side-channel attack
INFO
Published Date :
May 17, 2021, 1:15 p.m.
Last Modified :
Nov. 21, 2024, 5:57 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.2
Public PoC/Exploit Available at Github
CVE-2021-27342 has a 7 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-2021-27342.
| URL | Resource |
|---|---|
| https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html | Exploit Third Party Advisory |
| https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py | Exploit Third Party Advisory |
| https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 | Vendor Advisory |
| https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html | Exploit Third Party Advisory |
| https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py | Exploit Third Party Advisory |
| https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 | Vendor 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).
All CVE - PoC in GitHub
poc proofofconcept tester allcve cvegithub cvenew cvepoc cveupdate
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Exploit for CVE-2021-27342 vulnerability (telnet authentication brute-force protection bypass)
Python
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-27342 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-27342 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://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html Added Reference https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py Added Reference https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
May. 24, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N Changed Reference Type https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html No Types Assigned https://blog.whtaguy.com/2021/05/d-link-router-cve-2021-27342.html Exploit, Third Party Advisory Changed Reference Type https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py No Types Assigned https://github.com/guywhataguy/D-Link-CVE-2021-27342-exploit/blob/main/dlink-telnet-exploit-CVE-2021-27342.py Exploit, Third Party Advisory Changed Reference Type https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 No Types Assigned https://supportannouncement.us.dlink.com/announcement/publication.aspx?name=SAP10225 Vendor Advisory Added CWE NIST CWE-203 Added CPE Configuration AND OR *cpe:2.3:o:dlink:dir-842e_firmware:*:*:*:*:*:*:*:* versions up to (including) 3.0.2 OR cpe:2.3:h:dlink:dir-842e:r1:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-27342 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-2021-27342
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.35 }} 0.03%
score
0.71666
percentile