Ubuntu Security Update USN-3450-1: Open vSwitch vulnerabilities

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Ubuntu Security Notice USN-3450-1


11th 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 version:

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.

References


CVE-2017-9214, CVE-2017-9263, CVE-2017-9264, CVE-2017-9265

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