cve/2016/CVE-2016-4997.md

### [CVE-2016-4997](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-4997)
![](https://img.shields.io/static/v1?label=Product&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=%3D%20n%2Fa%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=n%2Fa&color=brighgreen)

### Description

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

### POC

#### Reference
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html
- https://www.exploit-db.com/exploits/40435/
- https://www.exploit-db.com/exploits/40489/

#### Github
- https://github.com/JlSakuya/Linux-Privilege-Escalation-Exploits