aptdaemon vulnerability

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

* Ubuntu 20.04 LTS
* Ubuntu 18.04 LTS
* Ubuntu 16.04 LTS

Summary

Aptdaemon could be made to expose sensitive information.

Software Description

* aptdaemon - transaction based package management service

Details

Vaisha Bernard discovered that Aptdaemon incorrectly handled the
Locale property. A local attacker could use this issue to test for
the presence of local files.

Update instructions

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

Ubuntu 20.04 LTS
aptdaemon - 1.1.1+bzr982-0ubuntu32.2

Ubuntu 18.04 LTS
aptdaemon - 1.1.1+bzr982-0ubuntu19.4

Ubuntu 16.04 LTS
aptdaemon - 1.1.1+bzr982-0ubuntu14.4

To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.

After a standard system update you need to reboot your computer to
make all the necessary changes.

References

* CVE-2020-15703

--- Mystic BBS v1.12 A46 (Linux/64)
* Origin: BZ&BZ BBS (21:4/110)