### [CVE-2017-15703](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15703)
![](https://img.shields.io/static/v1?label=Product&message=Apache%20NiFi&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Java%20deserialization&color=brighgreen)

### Description

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.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/PalindromeLabs/Java-Deserialization-CVEs