Headline
Ubuntu Security Notice USN-6690-1
Ubuntu Security Notice 6690-1 - Timothy Redaelli and Haresh Khandelwal discovered that Open vSwitch incorrectly handled certain crafted Geneve packets when hardware offloading via the netlink path is enabled. A remote attacker could possibly use this issue to cause Open vSwitch to crash, leading to a denial of service. It was discovered that Open vSwitch incorrectly handled certain ICMPv6 Neighbor Advertisement packets. A remote attacker could possibly use this issue to redirect traffic to arbitrary IP addresses.
==========================================================================
Ubuntu Security Notice USN-6690-1
March 12, 2024
openvswitch vulnerabilities
A security issue affects these releases of Ubuntu and its derivatives:
- Ubuntu 23.10
- Ubuntu 22.04 LTS
- Ubuntu 20.04 LTS
Summary:
Several security issues were fixed in Open vSwitch.
Software Description:
- openvswitch: Ethernet virtual switch
Details:
Timothy Redaelli and Haresh Khandelwal discovered that Open vSwitch
incorrectly handled certain crafted Geneve packets when hardware offloading
via the netlink path is enabled. A remote attacker could possibly use this
issue to cause Open vSwitch to crash, leading to a denial of service.
(CVE-2023-3966)
It was discovered that Open vSwitch incorrectly handled certain ICMPv6
Neighbor Advertisement packets. A remote attacker could possibly use this
issue to redirect traffic to arbitrary IP addresses. (CVE-2023-5366)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 23.10:
openvswitch-common 3.2.2-0ubuntu0.23.10.1
python3-openvswitch 3.2.2-0ubuntu0.23.10.1
Ubuntu 22.04 LTS:
openvswitch-common 2.17.9-0ubuntu0.22.04.1
python3-openvswitch 2.17.9-0ubuntu0.22.04.1
Ubuntu 20.04 LTS:
openvswitch-common 2.13.8-0ubuntu1.4
python3-openvswitch 2.13.8-0ubuntu1.4
This update uses a new upstream release, which includes additional bug
fixes. In general, a standard system update will make all the necessary
changes.
References:
https://ubuntu.com/security/notices/USN-6690-1
CVE-2023-3966, CVE-2023-5366
Package Information:
https://launchpad.net/ubuntu/+source/openvswitch/3.2.2-0ubuntu0.23.10.1
https://launchpad.net/ubuntu/+source/openvswitch/2.17.9-0ubuntu0.22.04.1
https://launchpad.net/ubuntu/+source/openvswitch/2.13.8-0ubuntu1.4
Related news
Debian Linux Security Advisory 5640-1 - Two vulnerabilities were discovered in Open vSwitch, a software-based Ethernet virtual switch, which could result in a bypass of OpenFlow rules or denial of service.
Red Hat Security Advisory 2024-1235-03 - An update for openvswitch3.1 is now available for Fast Datapath for Red Hat Enterprise Linux 8.
Red Hat Security Advisory 2024-1234-03 - An update for openvswitch2.17 is now available for Fast Datapath for Red Hat Enterprise Linux 8.
Red Hat Security Advisory 2024-1227-03 - An update for openvswitch3.1 is now available for Fast Datapath for Red Hat Enterprise Linux 9.
Ubuntu Security Notice 6514-1 - It was discovered that Open vSwitch did not correctly handle OpenFlow rules for ICMPv6 Neighbour Advertisement packets. A local attacker could possibly use this issue to redirect traffic to arbitrary IP addresses.
A flaw was found in Open vSwitch that allows ICMPv6 Neighbor Advertisement packets between virtual machines to bypass OpenFlow rules. This issue may allow a local attacker to create specially crafted packets with a modified or spoofed target IP address field that can redirect ICMPv6 traffic to arbitrary IP addresses.