USN-3450-1: Open vSwitch vulnerabilities

Releases

• Ubuntu 17.04
• Ubuntu 16.04 ESM

Packages

• 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

• openvswitch-common - 2.5.2-0ubuntu0.16.04.2

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