==========================================================================
Ubuntu Security Notice USN-6514-1
November 26, 2023

openvswitch vulnerability
==========================================================================

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

- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS (Available with Ubuntu Pro)

Summary:

Open vSwitch could be made to expose sensitive information over the
network.

Software Description:
- openvswitch: Ethernet virtual switch

Details:

It was discovered that Open vSwitch did not correctly handle OpenFlow
rules for ICMPv6 Neighbour Advertisement packets. A local attacker could
possibly use this issue to redirect traffic to arbitrary IP addresses.

Update instructions:

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

Ubuntu 20.04 LTS:
   openvswitch-common              2.13.8-0ubuntu1.3

Ubuntu 18.04 LTS (Available with Ubuntu Pro):
   openvswitch-common              2.9.8-0ubuntu0.18.04.5+esm1

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

References:
   https://ubuntu.com/security/notices/USN-6514-1
   CVE-2023-5366

Package Information:
   https://launchpad.net/ubuntu/+source/openvswitch/2.13.8-0ubuntu1.3

Ubuntu 6514-1: Open vSwitch vulnerability

November 27, 2023
Open vSwitch could be made to expose sensitive information over the network.

Summary

A security issue affects these releases of Ubuntu and its derivatives: - Ubuntu 20.04 LTS - Ubuntu 18.04 LTS (Available with Ubuntu Pro) Summary: Open vSwitch could be made to expose sensitive information over the network. Software Description: - openvswitch: Ethernet virtual switch Details: It was discovered that Open vSwitch did not correctly handle OpenFlow rules for ICMPv6 Neighbour Advertisement packets. A local attacker could possibly use this issue to redirect traffic to arbitrary IP addresses.

Update Instructions

The problem can be corrected by updating your system to the following package versions: Ubuntu 20.04 LTS: openvswitch-common 2.13.8-0ubuntu1.3 Ubuntu 18.04 LTS (Available with Ubuntu Pro): openvswitch-common 2.9.8-0ubuntu0.18.04.5+esm1 In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-6514-1

CVE-2023-5366

Severity
Ubuntu Security Notice USN-6514-1

Package Information

https://launchpad.net/ubuntu/+source/openvswitch/2.13.8-0ubuntu1.3

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