Alerts This Week
Warning Icon 1 758
Alerts This Week
Warning Icon 1 758

Ubuntu 18.04 LTS: USN-4512-1 Critical: util-linux Bash Completion Issue

ubuntu
Calendar Grey September 17, 2020
Dist Ubuntu Esm H88
Ubuntu 2020 Security Advisory USN-4512-1 concerns a util-linux vulnerability that permits the execution of arbitrary code through bash completion.
util-linux could be made to run programs when performing bash completion.

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.

Topics%20covered

Topics Covered

security advisory arbitrary code execution util-linux system update local attack ubuntu 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://ubuntu.com/security/notices/USN-4512-1

CVE-2018-7738

Severity
critical
Lowest
Low
Medium
High
Critical

September 17, 2020

Topics%20covered

Topics Covered

security advisory arbitrary code execution util-linux system update local attack ubuntu bash completion

Package Information

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

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here