cve/2002/CVE-2002-0820.md

### [CVE-2002-0820](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2002-0820)
![](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

FreeBSD kernel 4.6 and earlier closes the file descriptors 0, 1, and 2 after they have already been assigned to /dev/null when the descriptors reference procfs or linprocfs, which could allow local users to reuse the file descriptors in a setuid or setgid program to modify critical data and gain privileges.

### POC

#### Reference
- http://marc.info/?l=bugtraq&m=102979180524452&w=2

#### Github
No PoCs found on GitHub currently.