==========================================================================
Ubuntu Security Notice USN-4512-1
September 17, 2020

util-linux vulnerability
==========================================================================

A security issue affects these releases of Ubuntu and its derivatives:

– Ubuntu 18.04 LTS

Summary:

util-linux could be made to run programs when performing bash completion.

Software Description:
– util-linux: miscellaneous system utilities

Details:

It was discovered that the umount bash completion script shipped in
util-linux incorrectly handled certain mountpoints. If a local attacker
were able to create arbitrary mountpoints, another user could be tricked
into executing arbitrary code when attempting to run the umount command
with bash completion.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS:
util-linux 2.31.1-0.4ubuntu3.7

In general, a standard system update will make all the necessary changes.

References:
https://usn.ubuntu.com/4512-1
CVE-2018-7738

Package Information:
https://launchpad.net/ubuntu/+source/util-linux/2.31.1-0.4ubuntu3.7

—–BEGIN PGP SIGNATURE—–
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=t3GT
—–END PGP SIGNATURE—–
—