cve/2018/CVE-2018-12021.md

### [CVE-2018-12021](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12021)
![](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

Singularity 2.3.0 through 2.5.1 is affected by an incorrect access control on systems supporting overlay file system. When using the overlay option, a malicious user may access sensitive information by exploiting a few specific Singularity features.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2019/05/16/1
- http://www.openwall.com/lists/oss-security/2019/05/16/1

#### Github
- https://github.com/ARGOeu-Metrics/secmon-probes
- https://github.com/ARGOeu/secmon-probes
- https://github.com/ARPSyndicate/cvemon