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USN-6390-1: Bind vulnerabilities

20 September 2023

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

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Releases

Packages

  • bind9 - Internet Domain Name Server

Details

It was discovered that Bind incorrectly handled certain control channel
messages. A remote attacker with access to the control channel could
possibly use this issue to cause Bind to crash, resulting in a denial of
service. (CVE-2023-3341)

Robert Story discovered that Bind incorrectly handled certain DNS-over-TLS
queries. A remote attacker could possibly use this issue to cause Bind to
crash, resulting in a denial of service. This issue only affected Ubuntu
22.04 LTS, and Ubuntu 23.04. (CVE-2023-4236)

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 23.04
Ubuntu 22.04
Ubuntu 20.04

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

Related notices

  • USN-6421-1: libisc-export160, libdns-export1100, libbind9-160, libisccfg-export140, libisc160, libisccc160, host, libbind-dev, libdns1100, libirs-export160, libirs141, libisc169, libirs160, bind9utils, libisccfg160, bind9-host, libisccc90, bind9, libbind9-90, libisccc-export160, libisc95, libisccfg90, libdns-export162, lwresd, libisccc140, libdns162, libdns100, libisccc-export140, libbind-export-dev, liblwres90, liblwres141, libisccc-export140-udeb, liblwres160, libirs-export141, libisc-export169, libisccfg140, dnsutils, libbind9-140, bind9-doc, libisccfg-export160