CVE-2019-16764

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Summary

CVECVE-2019-16764
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-11-25 17:15:00 UTC
Updated2021-10-28 13:21:00 UTC
DescriptionThe 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.

Risk And Classification

Problem Types: NVD-CWE-noinfo

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Powauth Powassent All All All All
Application Powauth Powassent All All All All

References

ReferenceSourceLinkTags
Common Caveats MISC erlang.org Product
pow_assent | Hex MISC hex.pm Release Notes
Denial of service · Advisory · pow-auth/pow_assent · GitHub CONFIRM github.com Third Party Advisory
Prevent `String.to_atom/1` calls · pow-auth/pow_assent@026105e · GitHub MISC github.com Patch
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

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