USN-3450-1: Open vSwitch vulnerabilities
11 October 2017
openvswitch vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 17.04
- Ubuntu 16.04 LTS
Summary
Several security issues were fixed in Open vSwitch.
Software Description
- openvswitch - Ethernet virtual switch
Details
Bhargava Shastry discovered that Open vSwitch incorrectly handled certain OFP messages. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. (CVE-2017-9214)
It was discovered that Open vSwitch incorrectly handled certain OpenFlow role messages. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. (CVE-2017-9263)
It was discovered that Open vSwitch incorrectly handled certain malformed packets. 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 17.04. (CVE-2017-9264)
It was discovered that Open vSwitch incorrectly handled group mod OpenFlow messages. A remote attacker could possibly use this issue to cause Open vSwitch to crash, resulting in a denial of service. (CVE-2017-9265)
Update instructions
The problem can be corrected by updating your system to the following package versions:
- Ubuntu 17.04
- openvswitch-common - 2.6.1-0ubuntu5.1
- Ubuntu 16.04 LTS
- openvswitch-common - 2.5.2-0ubuntu0.16.04.2
To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.