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AUSCERT External Security Bulletin Redistribution
ESB-2019.3351.2
USN-4120-1 and USN-4120-1: systemd vulnerability
11 September 2019
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AusCERT Security Bulletin Summary
---------------------------------
Product: systemd
Publisher: Ubuntu
Operating System: Ubuntu
Linux variants
Impact/Access: Provide Misleading Information -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-15718
Original Bulletin:
https://usn.ubuntu.com/4120-1/
https://usn.ubuntu.com/4120-2/
Comment: This bulletin contains two (2) Ubuntu security advisories.
This advisory references vulnerabilities in products which run on
platforms other than Ubuntu. It is recommended that administrators
running systemd check for an updated version of the software for
their operating system.
Revision History: September 11 2019: new update to fix regression
September 4 2019: Initial Release
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USN-4120-2: systemd regression
10 September 2019
systemd regression
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
Summary
USN-4120-1 caused a regression in systemd.
Software Description
o systemd - system and service manager
Details
USN-4120-1 fixed a vulnerability in systemd. The update included a recent SRU
from the updates pocket that introduced networking problems for some users.
This update fixes the problem.
We apologize for the inconvenience.
Original advisory details:
It was discovered that the systemd-resolved D-Bus interface did not enforce
appropriate access controls. A local unprivileged user could exploit this to
modify a system's DNS resolver settings.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
systemd - 240-6ubuntu5.7
Ubuntu 18.04 LTS
systemd - 237-3ubuntu10.29
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
o USN-4120-1
o LP: 1842651
- ---
USN-4120-1: systemd vulnerability
3 September 2019
systemd vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 19.04
o Ubuntu 18.04 LTS
Summary
systemd-resolved would allow unprivileged users to change DNS settings.
Software Description
o systemd - system and service manager
Details
It was discovered that the systemd-resolved D-Bus interface did not enforce
appropriate access controls. A local unprivileged user could exploit this to
modify a system's DNS resolver settings.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 19.04
systemd - 240-6ubuntu5.6
Ubuntu 18.04 LTS
systemd - 237-3ubuntu10.28
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
o CVE-2019-15718
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