USN-3341-1: Systemd vulnerability

Ubuntu Security Notice USN-3341-1

27th June, 2017

systemd vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.04
  • Ubuntu 16.10

Summary

systemd-resolved could be made to crash or run programs if it received a specially crafted DNS response.

Software description

  • systemd - system and service manager

Details

An out-of-bounds write was discovered in systemd-resolved when handling
specially crafted DNS responses. A remote attacker could potentially
exploit this to cause a denial of service (daemon crash) or execute
arbitrary code. (CVE-2017-9445)

Update instructions

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

Ubuntu 17.04:
systemd 232-21ubuntu5
Ubuntu 16.10:
systemd 231-9ubuntu5

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References

CVE-2017-9445, LP: 1695546