[USN-4986-2] rpcbind vulnerability

========================================================================== Ubuntu Security Notice USN-4986-2 June 09, 2021
rpcbind vulnerability ==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 16.04 ESM – Ubuntu 14.04 ESM
Summary:
rpcbind could be made to consume resources and crash if it received specially crafted network traffic.
Software Description: – rpcbind: converts RPC program numbers into universal addresses
Details:
USN-4986-1 fixed a vulnerability in rpcbind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM.
Original advisory details:
It was discovered that rpcbind incorrectly handled certain large data sizes. A remote attacker could use this issue to cause rpcbind 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 16.04 ESM: rpcbind 0.2.3-0.2ubuntu0.16.04.1+esm1
Ubuntu 14.04 ESM: rpcbind 0.2.1-2ubuntu2.2+esm1
After a standard system update you need to reboot your computer to make all the necessary changes.
References: ubuntu.com/security/notices/USN-4986-2 ubuntu.com/security/notices/USN-4986-1 CVE-2017-8779