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USN-3873-1: Open vSwitch vulnerabilities

30 January 2019

Several security issues were fixed in Open vSwitch.

Releases

Packages

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)

Update instructions

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

Ubuntu 18.04
Ubuntu 16.04

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