CVE-2019-16764
Apache PowAssent Atom Table Denial of Service
Description
The use of `String.to_atom/1` in PowAssent is susceptible to denial of service attacks. In `PowAssent.Phoenix.AuthorizationController` a value is fetched from the user provided params, and `String.to_atom/1` is used to convert the binary value to an atom so it can be used to fetch the provider configuration value. This is unsafe as it is user provided data, and can be used to fill up the whole atom table of ~1M which will cause the app to crash.
INFO
Published Date :
Nov. 25, 2019, 5:15 p.m.
Last Modified :
Oct. 28, 2021, 1:21 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.8
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-2019-16764.
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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The following list is the news that have been mention
CVE-2019-16764 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2019-16764 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.
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CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Reanalysis by [email protected]
Oct. 28, 2021
Action Type Old Value New Value Removed CWE NIST CWE-20 Added CWE NIST NVD-CWE-noinfo -
Initial Analysis by [email protected]
Dec. 11, 2019
Action Type Old Value New Value Added CVSS V2 NIST (AV:L/AC:L/Au:N/C:N/I:N/A:P) Added CVSS V3.1 NIST AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Changed Reference Type http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1 No Types Assigned http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1 Product Changed Reference Type https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf No Types Assigned https://github.com/pow-auth/pow_assent/commit/026105eeecc0e3c2f807e7109e745ea93c0fd9cf Patch Changed Reference Type https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986 No Types Assigned https://github.com/pow-auth/pow_assent/security/advisories/GHSA-368c-xvrv-x986 Third Party Advisory Changed Reference Type https://hex.pm/packages/pow_assent No Types Assigned https://hex.pm/packages/pow_assent Release Notes Added CWE NIST CWE-20 Added CPE Configuration OR *cpe:2.3:a:powauth:powassent:*:*:*:*:*:*:*:* versions up to (excluding) 0.4.4
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2019-16764 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-2019-16764
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.07 }} 0.03%
score
0.32143
percentile