CVE-2019-16764

MEDIUM Year: 2019
CVSS v3 Score
5.5
Medium
CVSS v2 Score
2.1
Low
Weakness Type
CWE-400
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Vulnerability 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.

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