Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 573
Alerts This Week
Warning Icon 1 573

Ubuntu 21.04 & 20.04 LTS USN-5065-1 Critical: Open vSwitch DoS Risk

ubuntu
Calendar Grey September 8, 2021
Dist Ubuntu Esm H88
A flaw in Open vSwitch on Ubuntu systems poses risks of crashes or malicious code execution through specially designed network packets.
Open vSwitch could be made to crash or run programs if it received specially crafted network traffic.

Summary

Open vSwitch could be made to crash or run programs if it received

specially crafted network traffic.

Software Description:

- openvswitch: Ethernet virtual switch

Details:

It was discovered that Open vSwitch incorrectly handled decoding RAW_ENCAP

actions. A remote attacker could use this issue to cause Open vSwitch to

crash, resulting in a denial of service, or possibly execute arbitrary

code.

Topics%20covered

Topics Covered

security advisory software update code execution DoS Ubuntu network attack Open vSwitch

Update Instructions

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

Ubuntu 21.04:
  openvswitch-common              2.15.0-0ubuntu3.1

Ubuntu 20.04 LTS:
  openvswitch-common              2.13.3-0ubuntu0.20.04.2

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

References

https://ubuntu.com/security/notices/USN-5065-1

CVE-2021-36980

Severity
critical
Lowest
Low
Medium
High
Critical

September 08, 2021

Topics%20covered

Topics Covered

security advisory software update code execution DoS Ubuntu network attack Open vSwitch

Package Information

https://launchpad.net/ubuntu/+source/openvswitch/2.15.0-0ubuntu3.1
https://launchpad.net/ubuntu/+source/openvswitch/2.13.3-0ubuntu0.20.04.2

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.