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Ubuntu 18.04, 16.04: USN-3873-1 Critical Open vSwitch Denial Of Service

ubuntu
Calendar Grey January 30, 2019
Dist Ubuntu Esm H88
=========================================================================Ubuntu Security Notice USN-
Several security issues were fixed in Open vSwitch.

Summary

Several security issues were fixed in Open vSwitch.

Software Description:

- openvswitch: Ethernet virtual switch

Details:

It was discovered that Open vSwitch incorrectly decoded certain packets. A

remote attacker could possibly use this issue to cause Open vSwitch to

crash, resulting in a denial of service. (CVE-2018-17204)

It was discovered that Open vSwitch incorrectly handled processing certain

flows. A remote attacker could possibly use this issue to cause Open

vSwitch to crash, resulting in a denial of service. This issue only

affected Ubuntu 18.04 LTS. (CVE-2018-17205)

It was discovered that Open vSwitch incorrectly handled BUNDLE action

decoding. A remote attacker could possibly use this issue to cause Open

vSwitch to crash, resulting in a denial of service. (CVE-2018-17206)

Topics%20covered

Topics Covered

security advisory denial of service software update remote attack Ubuntu Open vSwitch

Update Instructions

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

Ubuntu 18.04 LTS:
  openvswitch-common              2.9.2-0ubuntu0.18.04.3

Ubuntu 16.04 LTS:
  openvswitch-common              2.5.5-0ubuntu0.16.04.2

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

References

https://ubuntu.com/security/notices/USN-3873-1

CVE-2018-17204, CVE-2018-17205, CVE-2018-17206

Severity
critical
Lowest
Low
Medium
High
Critical

January 30, 2019

Topics%20covered

Topics Covered

security advisory denial of service software update remote attack Ubuntu Open vSwitch

Package Information

https://launchpad.net/ubuntu/+source/openvswitch/2.9.2-0ubuntu0.18.04.3
https://launchpad.net/ubuntu/+source/openvswitch/2.5.5-0ubuntu0.16.04.2

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