USN-3873-1: Open vSwitch vulnerabilities

Releases

• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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)

Update instructions

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

Ubuntu 18.04

• openvswitch-common - 2.9.2-0ubuntu0.18.04.3

Ubuntu 16.04

• openvswitch-common - 2.5.5-0ubuntu0.16.04.2

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

References

• CVE-2018-17204
• CVE-2018-17205
• CVE-2018-17206