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Ubuntu 18.04 LTS USN-3806-1 Critical: systemd DoS Threat

ubuntu
Calendar Grey November 5, 2018
Dist Ubuntu Esm H88
A systemd flaw on Ubuntu exposes systems to crashes or unauthorized code execution through specially designed network inputs. Urgent patch advised.
systemd-networkd could be made to crash or run programs if it received specially crafted network traffic.

Summary

systemd-networkd could be made to crash or run programs if it received

specially crafted network traffic.

Software Description:

- systemd: system and service manager

Details:

Felix Wilhelm discovered that the systemd-networkd DHCPv6 client

incorrectly handled certain DHCPv6 messages. In configurations where

systemd-networkd is being used, an attacker on the same network could use

this issue to cause systemd-networkd to crash, resulting in a denial of

service, or possibly execute arbitrary code.

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu network threat systemd

Update Instructions

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

Ubuntu 18.10:
  systemd                         239-7ubuntu10.1

Ubuntu 18.04 LTS:
  systemd                         237-3ubuntu10.4

Ubuntu 16.04 LTS:
  systemd                         229-4ubuntu21.6

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

References

https://ubuntu.com/security/notices/USN-3806-1

CVE-2018-15688

Severity
critical
Lowest
Low
Medium
High
Critical

November 05, 2018

Topics%20covered

Topics Covered

security advisory critical DoS Ubuntu network threat systemd

Package Information

https://launchpad.net/ubuntu/+source/systemd/239-7ubuntu10.1
https://launchpad.net/ubuntu/+source/systemd/237-3ubuntu10.4
https://launchpad.net/ubuntu/+source/systemd/229-4ubuntu21.6

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