USN-3956-1: Bind vulnerability

Releases

• Ubuntu 19.04
• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• bind9 - Internet Domain Name Server

Details

It was discovered that Bind incorrectly handled limiting the number of
simultaneous TCP clients. A remote attacker could possibly use this issue
to cause Bind to consume resources, leading to a denial of service.

Update instructions

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

Ubuntu 19.04

• bind9 - 1:9.11.5.P1+dfsg-1ubuntu2.3

Ubuntu 18.10

• bind9 - 1:9.11.4+dfsg-3ubuntu5.3

Ubuntu 18.04

• bind9 - 1:9.11.3+dfsg-1ubuntu1.7

Ubuntu 16.04

• bind9 - 1:9.10.3.dfsg.P4-8ubuntu1.14

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

References

• CVE-2018-5743

Related notices

• USN-3956-2: libbind9-80, dnsutils, liblwres90, libisccc80, libbind9-90, libisccfg90, bind9, libdns100, libdns81, bind9-doc, libbind-dev, libisccfg82, liblwres80, bind9-host, libisccc90, host, bind9utils, libisc83, libisc95, lwresd