CVE-2019-16764
Medium
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.
SeverityMedium
CVSS6.5
Exploit probability—
ProductPowauth Powassent
PublishedNov 25, 2019
First seenNov 25, 2019
Weakness typeCWE-400Uncontrolled resource consumption
How to fix
Update
- powauth powassent0.4.4 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| powauth powassent | v < 0.4.4 | 0.4.4 |
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