CVE-2021-39171
Passport-SAML Denial-of-Service Vulnerability
Description
Passport-SAML is a SAML 2.0 authentication provider for Passport, the Node.js authentication library. Prior to version 3.1.0, a malicious SAML payload can require transforms that consume significant system resources to process, thereby resulting in reduced or denied service. This would be an effective way to perform a denial-of-service attack. This has been resolved in version 3.1.0. The resolution is to limit the number of allowable transforms to 2.
INFO
Published Date :
Aug. 27, 2021, 10:15 p.m.
Last Modified :
Sept. 7, 2021, 6:36 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
3.9
Public PoC/Exploit Available at Github
CVE-2021-39171 has a 1 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-2021-39171.
| URL | Resource |
|---|---|
| https://github.com/node-saml/passport-saml/pull/595 | Patch Third Party Advisory |
| https://github.com/node-saml/passport-saml/security/advisories/GHSA-5379-r78w-42h2 | 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).
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Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-39171 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-39171 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 [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Sep. 07, 2021
Action Type Old Value New Value Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Changed Reference Type https://github.com/node-saml/passport-saml/pull/595 No Types Assigned https://github.com/node-saml/passport-saml/pull/595 Patch, Third Party Advisory Changed Reference Type https://github.com/node-saml/passport-saml/security/advisories/GHSA-5379-r78w-42h2 No Types Assigned https://github.com/node-saml/passport-saml/security/advisories/GHSA-5379-r78w-42h2 Third Party Advisory Added CPE Configuration OR *cpe:2.3:a:passport-saml_project:passport-saml:*:*:*:*:*:node.js:*:* versions up to (excluding) 3.1.0
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-39171 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-2021-39171
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} 0.01%
score
0.42604
percentile