Detections
Analytics
CVE-2018-7738
high
Description
In util-linux before 2.32-rc1, bash-completion/umount allows local users to gain privileges by embedding shell commands in a mountpoint name, which is mishandled during a umount command (within Bash) by a different user, as demonstrated by logging in as root and entering umount followed by a tab character for autocompletion.
References
https://www.debian.org/security/2018/dsa-4134
https://usn.ubuntu.com/4512-1/
https://github.com/karelzak/util-linux/issues/539
https://github.com/karelzak/util-linux/commit/75f03badd7ed9f1dd951863d75e756883d3acc55