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Ubuntu Security Notice USN-4986-2

Ubuntu Security Notice USN-4986-2
Posted Jun 10, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4986-2 - USN-4986-1 fixed a vulnerability in rpcbind. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. 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. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2017-8779
SHA-256 | 32b149ed8230cc124da11b6389b252a579c710c6cb7964575dcf45329cc714ef

Ubuntu Security Notice USN-4986-2

Change Mirror Download
==========================================================================
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:
https://ubuntu.com/security/notices/USN-4986-2
https://ubuntu.com/security/notices/USN-4986-1
CVE-2017-8779
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