CVE-2023-3966

Openvswsitch: ovs-vswitch fails to recover after malformed geneve metadata packet

Description

A flaw was found in Open vSwitch where multiple versions are vulnerable to crafted Geneve packets, which may result in a denial of service and invalid memory accesses. Triggering this issue requires that hardware offloading via the netlink path is enabled.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Third-Party Advisory redhat.com Third-Party Advisory redhat.com
Affected: n/a openvswitch
Affected: Red Hat Fast Datapath for RHEL 7
Affected: Red Hat Fast Datapath for RHEL 7
Affected: Red Hat Fast Datapath for RHEL 7
Affected: Red Hat Fast Datapath for RHEL 7
Affected: Red Hat Fast Datapath for RHEL 7
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 8
Affected: Red Hat Fast Datapath for RHEL 9
Affected: Red Hat Fast Datapath for RHEL 9
Affected: Red Hat Fast Datapath for RHEL 9
Affected: Red Hat Fast Datapath for RHEL 9
Affected: Red Hat Red Hat Enterprise Linux 7
Affected: Red Hat Red Hat OpenShift Container Platform 3.11
Affected: RDO OpenStack RDO
Affected: Fedora Fedora
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/security/cve/CVE-2023-3966 third party advisory vdb entry
https://bugzilla.redhat.com/show_bug.cgi?id=2178363 third party advisory issue tracking
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VYYUBF6OW2JG7VOFEOROHXGSJCTES3QO/ mailing list
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LFZADABUDOFI2KZIRQBYFZCIKH55RGY3/ mailing list

Frequently Asked Questions

What is the severity of CVE-2023-3966?
CVE-2023-3966 has been scored as a high severity vulnerability.
How to fix CVE-2023-3966?
To fix CVE-2023-3966, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-3966 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-3966 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-3966?
CVE-2023-3966 affects n/a openvswitch, Red Hat Fast Datapath for RHEL 7, Red Hat Fast Datapath for RHEL 7, Red Hat Fast Datapath for RHEL 7, Red Hat Fast Datapath for RHEL 7, Red Hat Fast Datapath for RHEL 7, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 8, Red Hat Fast Datapath for RHEL 9, Red Hat Fast Datapath for RHEL 9, Red Hat Fast Datapath for RHEL 9, Red Hat Fast Datapath for RHEL 9, Red Hat Red Hat Enterprise Linux 7, Red Hat Red Hat OpenShift Container Platform 3.11, RDO OpenStack RDO, Fedora Fedora.
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