CVE-2020-9487: Missing Authentication for Critical Function

October 1, 2020 (updated July 30, 2023)

In Apache NiFi, the NiFi download token (one-time password) mechanism used a fixed cache size and did not authenticate a request to create a download token, only when attempting to use the token to access the content. An unauthenticated user could repeatedly request download tokens, preventing legitimate users from requesting download tokens.

References

github.com/apache/nifi/pull/4271
nifi.apache.org/security
nvd.nist.gov/vuln/detail/CVE-2020-9487

Code Behaviors & Features

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