USN-4077-1: tmpreaper vulnerability
tmpreaper vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS
Summary
tmpreaper could be made to overwrite files as the administrator.
Software Description
- tmpreaper – cleans up files in directories based on their age
Details
It was discovered that tmpreaper incorrectly handled certain mount operations. A
local attacker could possibly use this issue to create arbitrary files, leading
to privilege escalation.
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 18.04 LTS
- tmpreaper – 1.6.13+nmu1+deb9u1build0.18.04.1
- Ubuntu 16.04 LTS
- tmpreaper – 1.6.13+nmu1+deb9u1build0.16.04.1
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-4077-1: tmpreaper vulnerability
