USN-4468-2: Bind vulnerability

24 August 2020

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



  • bind9 - Internet Domain Name Server


USN-4468-1 fixed a vulnerability in Bind. This update provides
the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM.

Original advisory details:

Dave Feldman, Jeff Warren, and Joel Cunningham discovered that Bind
incorrectly handled certain truncated responses to a TSIG-signed request. A
remote attacker could possibly use this issue to cause Bind to crash,
resulting in a denial of service. (CVE-2020-8622)

Update instructions

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

Ubuntu 14.04
Ubuntu 12.04

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


Related notices

  • USN-4468-1: bind9-utils, libisccc160, libisccfg-export140-udeb, libisc-export160, libirs141, bind9-host, libbind-dev, libirs-export160-udeb, libisccc-export160-udeb, liblwres141, libisccfg-export140, libisccc140, libbind-export-dev, libdns-export162, libisccfg160, libisccfg140, libisc-export160-udeb, libisc-export169, libisccc-export160, bind9-libs, dnsutils, libdns-export1100-udeb, bind9-doc, libisccc-export140, libirs-export141, libisccfg-export160-udeb, bind9utils, libisc160, libisccc-export140-udeb, libisccfg-export160, libbind9-140, bind9-dnsutils, libbind9-160, libisc169, libirs-export141-udeb, bind9, host, libdns-export1100, libdns-export162-udeb, libdns162, libirs-export160, libisc-export169-udeb, liblwres160, lwresd, libdns1100, libirs160