USN-4881-1: containerd vulnerability

17 March 2021

The system could be made to expose sensitive information.

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Releases

Packages

Details

It was discovered that containerd incorrectly handled certain environment
variables. Contrary to expectations, a container could receive environment
variables defined for a different container, possibly containing sensitive
information.

Reduce your security exposure

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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 20.10
Ubuntu 20.04

After a standard system update you need to restart containerd to make
all the necessary changes.

References

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Further reading