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Ubuntu 23.04: USN-6511-1 Critical: OpenZFS Network Access Issue

ubuntu
Calendar Grey November 23, 2023
Dist Ubuntu Esm H88
OpenZFS for Ubuntu reveals unexpected network vulnerabilities linked to IPv6 management flaws. Update immediately!
OpenZFS could allow unintended access to network services.

Summary

OpenZFS could allow unintended access to network services.

Software Description:

- zfs-linux: OpenZFS filesystem for Linux

Details:

It was discovered that the OpenZFS sharenfs feature incorrectly handled

IPv6 address data. This could result in IPv6 restrictions not being

applied, contrary to expectations.

Topics%20covered

Topics Covered

security advisory Ubuntu vulnerability network access OpenZFS zfs-linux IPv6 handling

Update Instructions

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

Ubuntu 23.04:
   libuutil3linux                  2.1.9-2ubuntu1.2
   zfsutils-linux                  2.1.9-2ubuntu1.2

Ubuntu 22.04 LTS:
   libuutil3linux                  2.1.5-1ubuntu6~22.04.2
   zfsutils-linux                  2.1.5-1ubuntu6~22.04.2

Ubuntu 20.04 LTS:
   libuutil1linux                  0.8.3-1ubuntu12.16
   zfsutils-linux                  0.8.3-1ubuntu12.16

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

References

https://ubuntu.com/security/notices/USN-6511-1

CVE-2013-20001

Severity
critical
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6511-1

Topics%20covered

Topics Covered

security advisory Ubuntu vulnerability network access OpenZFS zfs-linux IPv6 handling

Package Information

https://launchpad.net/ubuntu/+source/zfs-linux/2.1.9-2ubuntu1.2
https://launchpad.net/ubuntu/+source/zfs-linux/2.1.5-1ubuntu6~22.04.2
https://launchpad.net/ubuntu/+source/zfs-linux/0.8.3-1ubuntu12.16

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