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USN-5332-2: Bind vulnerability

17 March 2022

Bind could be made to manipulate cache results.

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Releases

Packages

  • bind9 - Internet Domain Name Server

Details

USN-5332-1 fixed a vulnerability in Bind. This update provides
the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.

Original advisory details:

Xiang Li, Baojun Liu, Chaoyi Lu, and Changgen Zou discovered that Bind
incorrectly handled certain bogus NS records when using forwarders. A
remote attacker could possibly use this issue to manipulate cache results.
(CVE-2021-25220)

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 16.04
Ubuntu 14.04

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

References

Related notices

  • USN-5332-1: dnsutils, libbind9-160, bind9-dnsutils, libirs-export160, bind9-dev, bind9-utils, bind9-doc, libisccc-export160, liblwres160, libbind-dev, bind9-libs, libisc-export169, libisccc160, libirs160, libdns1100, libisc169, libisccfg-export160, libisccfg160, bind9utils, libbind-export-dev, libdns-export1100, bind9-host, bind9