CVE-2017-15703: Deserialization of Untrusted Data

October 25, 2019 (updated August 18, 2021)

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.

References

github.com/advisories/GHSA-xwx6-vmj4-5rv8
github.com/apache/nifi/commit/9e2c7be7d3c6a380c5f61074d9a5a690b617c3dc

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