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Ubuntu 16.04 ESM USN-5013-2 Critical: Systemd Denial Of Service

ubuntu
Calendar Grey July 20, 2021
Dist Ubuntu Esm H88
A variety of vulnerabilities addressed in systemd for Ubuntu 16.04 ESM impacting both security and system reliability.
Several security issues were fixed in systemd.

Summary

Several security issues were fixed in systemd.

Software Description:

- systemd: system and service manager

Details:

USN-5013-1 fixed several vulnerabilities in systemd. This update provides

the corresponding update for Ubuntu 16.04 ESM.

Original advisory 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)

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu systemd service manager

Update Instructions

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

Ubuntu 16.04 ESM:
  systemd                         229-4ubuntu21.31+esm1

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

References

https://ubuntu.com/security/notices/USN-5013-2

https://ubuntu.com/security/notices/USN-5013-1

CVE-2020-13529, CVE-2021-33910

Severity
critical
Lowest
Low
Medium
High
Critical

July 20, 2021

Topics%20covered

Topics Covered

security advisory denial of service update critical Ubuntu systemd service manager

Package Information

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