USN-4976-1 fixed a vulnerability in Dnsmasq. This update provides the corresponding update for Ubuntu 16.04 ESM.
Dnsmasq has been updated to 2.79-1 for Ubuntu 16.04 ESM in order to fix some security issues.
Original advisory details:
Petr Mensik discovered that Dnsmasq incorrectly randomized source ports in certain configurations. A remote attacker could possibly use this issue to facilitate DNS cache poisoning attacks.
{ "binaries": [ { "binary_name": "dnsmasq", "binary_version": "2.79-1ubuntu0.16.04.1+esm1" }, { "binary_name": "dnsmasq-base", "binary_version": "2.79-1ubuntu0.16.04.1+esm1" }, { "binary_name": "dnsmasq-base-lua", "binary_version": "2.79-1ubuntu0.16.04.1+esm1" }, { "binary_name": "dnsmasq-utils", "binary_version": "2.79-1ubuntu0.16.04.1+esm1" } ], "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro" }