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Ubuntu Security Notice USN-6691-1
March 12, 2024

ovn vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

• Ubuntu 23.10
• Ubuntu 22.04 LTS
• Ubuntu 20.04 LTS

Summary:

OVN could be made to disrupt traffic.

Software Description:

• ovn: system to support virtual network abstraction

Details:

It was discovered that OVN incorrectly enabled OVS Bidirectional Forwarding
Detection on logical ports. A remote attacker could possibly use this issue
to disrupt traffic.

Update instructions:

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

Ubuntu 23.10:
ovn-central 23.09.0-1ubuntu0.1
ovn-common 23.09.0-1ubuntu0.1
ovn-host 23.09.0-1ubuntu0.1
ovn-ic 23.09.0-1ubuntu0.1

Ubuntu 22.04 LTS:
ovn-central 22.03.3-0ubuntu0.22.04.2
ovn-common 22.03.3-0ubuntu0.22.04.2
ovn-host 22.03.3-0ubuntu0.22.04.2
ovn-ic 22.03.3-0ubuntu0.22.04.2

Ubuntu 20.04 LTS:
ovn-central 20.03.2-0ubuntu0.20.04.5
ovn-common 20.03.2-0ubuntu0.20.04.5
ovn-host 20.03.2-0ubuntu0.20.04.5
ovn-ic 20.03.2-0ubuntu0.20.04.5

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-6691-1
CVE-2024-2182

Package Information:
https://launchpad.net/ubuntu/+source/ovn/23.09.0-1ubuntu0.1
https://launchpad.net/ubuntu/+source/ovn/22.03.3-0ubuntu0.22.04.2
https://launchpad.net/ubuntu/+source/ovn/20.03.2-0ubuntu0.20.04.5