Any authenticated user (valid client certificate but without ACL permissions) could upload a template which contained malicious code and caused a denial of service via Java deserialization attack. The fix to properly handle Java deserialization was applied on the Apache NiFi 1.4.0 release. Users running a prior 1.x release should upgrade to the appropriate release.
The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.
Link | Tags |
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https://nifi.apache.org/security.html#CVE-2017-15703 | vendor advisory |