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Ubuntu Security Notice USN-5242-1

Ubuntu Security Notice USN-5242-1
Posted Jan 20, 2022
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5242-1 - It was discovered that Open vSwitch incorrectly handled certain fragmented packets. A remote attacker could possibly use this issue to cause Open vSwitch to consume resources, leading to a denial of service.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-3905
SHA-256 | 77f8da0e77c6ef919feee5799eb6b9efb97a2189371d1bd1cc64792259209d4d

Ubuntu Security Notice USN-5242-1

Change Mirror Download
==========================================================================
Ubuntu Security Notice USN-5242-1
January 20, 2022

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

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

- Ubuntu 21.10

Summary:

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

Software Description:
- openvswitch: Ethernet virtual switch

Details:

It was discovered that Open vSwitch incorrectly handled certain fragmented
packets. A remote attacker could possibly use this issue to cause Open
vSwitch to consume resources, leading to a denial of service.

Update instructions:

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

Ubuntu 21.10:
openvswitch-common 2.16.0-0ubuntu2.1

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

References:
https://ubuntu.com/security/notices/USN-5242-1
CVE-2021-3905

Package Information:
https://launchpad.net/ubuntu/+source/openvswitch/2.16.0-0ubuntu2.1
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