Your submission was sent successfully! Close

You have successfully unsubscribed! Close

USN-5013-1: systemd vulnerabilities

20 July 2021

Several security issues were fixed in systemd.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Releases

Packages

  • systemd - system and service manager

Details

It was discovered that systemd incorrectly handled certain mount paths. A
local attacker could possibly use this issue to cause systemd to crash,
resulting in a denial of service. (CVE-2021-33910)

Mitchell Frank discovered that systemd incorrectly handled DHCP FORCERENEW
packets. A remote attacker could possibly use this issue to reconfigure
servers. (CVE-2020-13529)

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 21.04
Ubuntu 20.10
Ubuntu 20.04
Ubuntu 18.04

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

Related notices

  • USN-5013-2: libpam-systemd, libnss-myhostname, systemd-journal-remote, systemd-sysv, udev-udeb, libsystemd0, libudev-dev, libudev1, systemd, libudev1-udeb, systemd-coredump, libsystemd-dev, libnss-mymachines, libnss-resolve, systemd-container, udev