CVEs-PoC/2020/CVE-2020-10174.md

### [CVE-2020-10174](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-10174)
![](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

init_tmp in TeeJee.FileSystem.vala in Timeshift before 20.03 unsafely reuses a preexisting temporary directory in the predictable location /tmp/timeshift. It follows symlinks in this location or uses directories owned by unprivileged users. Because Timeshift also executes scripts under this location, an attacker can attempt to win a race condition to replace scripts created by Timeshift with attacker-controlled scripts. Upon success, an attacker-controlled script is executed with full root privileges. This logic is practically always triggered when Timeshift runs regardless of the command-line arguments used.

### POC

#### Reference
- http://www.openwall.com/lists/oss-security/2020/03/06/3
- https://bugzilla.suse.com/show_bug.cgi?id=1165802

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