Debian DSA-4134-1 : util-linux - security update

Bjorn Bosselmann discovered that the umount bash completion from util-linux does not properly handle embedded shell commands in a mountpoint name. An attacker with rights to mount filesystems can take advantage of this flaw for privilege escalation if a user in particular root is tricked into usi...

CVE-2018-7738

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...

util-linux: User-assisted execution of arbitrary code

Background util-linux is a suite of Linux programs including mount and umount, programs used to mount and unmount filesystems. Description It was discovered that the umount bash-completion as provided by util-linux does not escap mount point paths. Impact An attacker controlling a volume label...