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Ubuntu Security Notice USN-4729-1

Ubuntu Security Notice USN-4729-1
Posted Feb 11, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4729-1 - Joakim Hindersson discovered that Open vSwitch incorrectly parsed certain network packets. A remote attacker could use this issue to cause a denial of service, or possibly alter packet classification.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2020-35498
MD5 | a3a094b1e953292162369944791069b3

Ubuntu Security Notice USN-4729-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-4729-1
February 10, 2021

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

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

- Ubuntu 20.10
- Ubuntu 20.04 LTS
- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Open vSwitch could be made to crash or perform unexpectedly if it received
specially crafted network traffic.

Software Description:
- openvswitch: Ethernet virtual switch

Details:

Joakim Hindersson discovered that Open vSwitch incorrectly parsed certain
network packets. A remote attacker could use this issue to cause a denial
of service, or possibly alter packet classification.

Update instructions:

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

Ubuntu 20.10:
openvswitch-common 2.13.1-0ubuntu1.3

Ubuntu 20.04 LTS:
openvswitch-common 2.13.1-0ubuntu0.20.04.4

Ubuntu 18.04 LTS:
openvswitch-common 2.9.8-0ubuntu0.18.04.2

Ubuntu 16.04 LTS:
openvswitch-common 2.5.9-0ubuntu0.16.04.3

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

References:
https://usn.ubuntu.com/4729-1
CVE-2020-35498

Package Information:
https://launchpad.net/ubuntu/+source/openvswitch/2.13.1-0ubuntu1.3
https://launchpad.net/ubuntu/+source/openvswitch/2.13.1-0ubuntu0.20.04.4
https://launchpad.net/ubuntu/+source/openvswitch/2.9.8-0ubuntu0.18.04.2
https://launchpad.net/ubuntu/+source/openvswitch/2.5.9-0ubuntu0.16.04.3
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