cve/2017/CVE-2017-17450.md

### [CVE-2017-17450](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-17450)
![](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

net/netfilter/xt_osf.c in the Linux kernel through 4.14.4 does not require the CAP_NET_ADMIN capability for add_callback and remove_callback operations, which allows local users to bypass intended access restrictions because the xt_osf_fingers data structure is shared across all net namespaces.

### POC

#### Reference
- https://usn.ubuntu.com/3583-2/

#### Github
- https://github.com/ARPSyndicate/cvemon