Ubuntu Security Notice 3466-1 - Karim Hossen & Thomas Imbert discovered that systemd-resolved incorrectly handled certain DNS responses. A remote attacker could possibly use this issue to cause systemd to temporarily stop responding, resulting in a denial of service.
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Ubuntu Security Notice USN-3466-1
October 26, 2017
systemd vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.10
- Ubuntu 17.04
Summary:
systemd could be made to temporarily stop responding if it received
specially crafted network traffic.
Software Description:
- systemd: system and service manager
Details:
Karim Hossen & Thomas Imbert discovered that systemd-resolved incorrectly
handled certain DNS responses. A remote attacker could possibly use this
issue to cause systemd to temporarily stop responding, resulting in a
denial of service.
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 17.10:
systemd 234-2ubuntu12.1
Ubuntu 17.04:
systemd 232-21ubuntu7.1
In general, a standard system update will make all the necessary changes.
References:
https://www.ubuntu.com/usn/usn-3466-1
CVE-2017-15908
Package Information:
https://launchpad.net/ubuntu/+source/systemd/234-2ubuntu12.1
https://launchpad.net/ubuntu/+source/systemd/232-21ubuntu7.1