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USN-4365-2: Bind vulnerabilities

20 May 2020

Several security issues were fixed in Bind.

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Releases

Packages

  • bind9 - Internet Domain Name Server

Details

USN-4365-1 fixed several vulnerabilities in Bind. This update provides
the corresponding update for Ubuntu 12.04 ESM and 14.04 ESM.

Original advisory details:

Lior Shafir, Yehuda Afek, and Anat Bremler-Barr discovered that Bind
incorrectly limited certain fetches. A remote attacker could possibly use
this issue to cause Bind to consume resources, leading to a denial of
service, or possibly use Bind to perform a reflection attack.
(CVE-2020-8616)

Tobias Klein discovered that Bind incorrectly handled checking TSIG
validity. A remote attacker could use this issue to cause Bind to crash,
resulting in a denial of service, or possibly perform other attacks.
(CVE-2020-8617)

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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.

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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-4365-1: libisccc-export140-udeb, libisc-export1100-udeb, libisc-export160, libbind9-160, libirs-export161-udeb, liblwres161, bind9-doc, libirs161, libirs160, libbind-export-dev, libirs-export161, libirs141, libisccc160, libisccc-export160-udeb, bind9-libs, libisccfg140, libisc160, libisccfg-export163-udeb, lwresd, libisccfg-export140, libdns162, liblwres141, libdns1104, libisc-export160-udeb, bind9utils, libisccfg163, libisccc161, bind9, libisc-export169-udeb, libisccfg-export160-udeb, libisccfg-export160, libisccc140, libbind-dev, libbind9-140, bind9-utils, libisccc-export161, libirs-export160, libisc1100, libisccc-export140, libdns-export1104-udeb, libirs-export160-udeb, liblwres160, libdns-export1100, bind9-dnsutils, libbind9-161, libisc-export169, libirs-export141, libdns-export162, libisc169, libirs-export141-udeb, bind9-host, dnsutils, libisccfg160, libdns-export1104, libisc-export1100, libisccc-export160, libdns-export1100-udeb, libisccfg-export140-udeb, libisccc-export161-udeb, libisccfg-export163, libdns1100, libdns-export162-udeb, host

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Further reading