cve/2017/CVE-2017-17689.md

### [CVE-2017-17689](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17689)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The S/MIME specification allows a Cipher Block Chaining (CBC) malleability-gadget attack that can indirectly lead to plaintext exfiltration, aka EFAIL.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/giterlizzi/secdb-feeds
- https://github.com/jaads/Efail-malleability-gadget-exploit