USN-4986-4: rpcbind regression

10 June 2021

USN-4986-1 caused a regression in rpcbind.

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Releases

Packages

  • rpcbind - converts RPC program numbers into universal addresses

Details

USN-4986-1 fixed a vulnerability in rpcbind. The update caused a regression
resulting in rpcbind crashing in certain environments. This update fixes
the problem 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.

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

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

Ubuntu 16.04
Ubuntu 14.04

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

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