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USN-4468-2: Bind vulnerability

24 August 2020

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

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Releases

Packages

  • bind9 - Internet Domain Name Server

Details

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)

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 14.04
Ubuntu 12.04

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

References

Related notices

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