Bind could be made to serve incorrect information or expose sensitive information over the network.
USN-3346-1 and USN-3346-2 fixed two vulnerabilities in Bind and a regression, respectively. This update provides the corresponding update for Ubuntu 12.04 ESM.
8 November 2017
A security issue affects these releases of Ubuntu and its derivatives:
Bind could be made to serve incorrect information or expose sensitive information over the network.
USN-3346-1 and USN-3346-2 fixed two vulnerabilities in Bind and a regression, respectively. This update provides the corresponding update for Ubuntu 12.04 ESM.
Original advisory details:
Clément Berthaux discovered that Bind did not correctly check TSIG authentication for zone update requests. An attacker could use this to improperly perform zone updates. (CVE-2017-3143)
Clément Berthaux discovered that Bind did not correctly check TSIG authentication for zone transfer requests. An attacker could use this to improperly transfer entire zones. (CVE-2017-3142)
In addition, this update adds the new root zone key signing key (KSK).
The problem can be corrected by updating your system to the following package versions:
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
After a standard system update you need to restart Bind to make all the necessary changes.
Vulmon