Vulnerabilities affecting this package (0)
| Vulnerability |
Summary |
Fixed by |
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This package is not known to be affected by vulnerabilities.
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Vulnerabilities fixed by this package (1)
| Vulnerability |
Summary |
Aliases |
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VCID-x4x4-mzaz-xkg3
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### Impact
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's user provided data, and can be
used to fill up the whole atom table of ~1M which will cause the app to
crash.
### Workarounds
A plug can be used to validate `conn.params["provider"]` before it reaches
the `PowAssent.Phoenix.AuthorizationController`.
### References
http://erlang.org/doc/efficiency_guide/commoncaveats.html#list_to_atom-1
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CVE-2019-16764
GHSA-5653-437f-5hmc
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