CVE-2021-3138
Discourse Two-Factor Authentication Bypass Vulnerability
Description
In Discourse 2.7.0 through beta1, a rate-limit bypass leads to a bypass of the 2FA requirement for certain forms.
INFO
Published Date :
Jan. 14, 2021, 4:15 a.m.
Last Modified :
Nov. 21, 2024, 6:20 a.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 2.0 | MEDIUM | [email protected] | ||||
| CVSS 3.1 | HIGH | [email protected] |
Public PoC/Exploit Available at Github
CVE-2021-3138 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-2021-3138.
| URL | Resource |
|---|---|
| http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html | Exploit Third Party Advisory VDB Entry |
| https://github.com/Mesh3l911/Disource | Third Party Advisory |
| https://github.com/discourse/discourse/releases | Release Notes Third Party Advisory |
| http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html | Exploit Third Party Advisory VDB Entry |
| https://github.com/Mesh3l911/Disource | Third Party Advisory |
| https://github.com/discourse/discourse/releases | Release Notes Third Party Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-3138 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-2021-3138
weaknesses.
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
None
None
None
None
None
Discource POC
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-2021-3138 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-3138 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 http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html Added Reference https://github.com/discourse/discourse/releases Added Reference https://github.com/Mesh3l911/Disource -
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Modified Analysis by [email protected]
Jan. 04, 2022
Action Type Old Value New Value Changed Reference Type http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html No Types Assigned http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html Exploit, Third Party Advisory, VDB Entry -
CVE Modified by [email protected]
Apr. 21, 2021
Action Type Old Value New Value Added Reference http://packetstormsecurity.com/files/162256/Discourse-2.7.0-2FA-Bypass.html [No Types Assigned] -
Modified Analysis by [email protected]
Mar. 23, 2021
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 05, 2021
Action Type Old Value New Value Removed Reference https://blog.discourse.org/ [Vendor Advisory] -
Initial Analysis by [email protected]
Jan. 21, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/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://blog.discourse.org/ No Types Assigned https://blog.discourse.org/ Vendor Advisory Changed Reference Type https://github.com/discourse/discourse/releases No Types Assigned https://github.com/discourse/discourse/releases Release Notes, Third Party Advisory Changed Reference Type https://github.com/Mesh3l911/Disource No Types Assigned https://github.com/Mesh3l911/Disource Third Party Advisory Added CWE NIST CWE-307 Added CPE Configuration OR *cpe:2.3:a:discourse:discourse:*:*:*:*:*:*:*:* versions up to (including) 2.6.0 *cpe:2.3:a:discourse:discourse:2.7.0:beta1:*:*:*:*:*:*
Vulnerability Scoring Details
Base CVSS Score: 7.5
Base CVSS Score: 5
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
3.03 }} -0.87%
score
0.86124
percentile