Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

USN-6723-1: Bind vulnerabilities

9 April 2024

Bind could be made to crash if it received specially crafted input.

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

  • bind9 - Internet Domain Name Server

Details

Elias Heftrig, Haya Schulmann, Niklas Vogel, and Michael Waidner discovered
that Bind icorrectly handled validating DNSSEC messages. A remote attacker
could possibly use this issue to cause Bind to consume resources, leading
to a denial of service. (CVE-2023-50387)

It was discovered that Bind incorrectly handled preparing an NSEC3 closest
encloser proof. A remote attacker could possibly use this issue to cause
Bind to consume resources, leading to a denial of service. (CVE-2023-50868)

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 18.04
Ubuntu 16.04
Ubuntu 14.04

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

Related notices

  • USN-6633-1: bind9, bind9utils, bind9-host, dnsutils, bind9-libs, bind9-dev, bind9-utils, bind9-doc, bind9-dnsutils
  • USN-6642-1: bind9, bind9utils, bind9-host, dnsutils, bind9-libs, bind9-utils, bind9-doc, bind9-dnsutils
  • USN-6657-1: dnsmasq, dnsmasq-base-lua, dnsmasq-base, dnsmasq-utils
  • USN-6665-1: python-unbound, unbound-host, libunbound-dev, unbound, unbound-anchor, python3-unbound, libunbound8
  • USN-6657-2: dnsmasq, dnsmasq-base-lua, dnsmasq-base, dnsmasq-utils