### [CVE-2013-2171](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-2171)
![](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 vm_map_lookup function in sys/vm/vm_map.c in the mmap implementation in the kernel in FreeBSD 9.0 through 9.1-RELEASE-p4 does not properly determine whether a task should have write access to a memory location, which allows local users to bypass filesystem write permissions and consequently gain privileges via a crafted application that leverages read permissions, and makes mmap and ptrace system calls.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/0xGabe/FreeBSD-9.0-9.1-Privilege-Escalation
- https://github.com/ARPSyndicate/cvemon
- https://github.com/Gabriel-Lima232/FreeBSD-9.0-9.1-Privilege-Escalation
- https://github.com/Snoopy-Sec/Localroot-ALL-CVE
- https://github.com/anoaghost/Localroot_Compile