Ovn: insufficient validation of bfd packets may lead to denial of service

6.5 CVSS

Vulnerability Description

A flaw was found in the Open Virtual Network (OVN). In OVN clusters where BFD is used between hypervisors for high availability, an attacker can inject specially crafted BFD packets from inside unprivileged workloads, including virtual machines or containers, that can trigger a denial of service.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

Red Hat would like to thank Frode Nordahl (Canonical) for reporting this issue.

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Affected Vendor

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Affected Software

Fast Datapath for Red Hat Enterprise Linux 8, Fast Datapath for Red Hat Enterprise Linux 9, Fast Datapath for RHEL 7, Fast Datapath for RHEL 8, Fast Datapath for RHEL 9

Vulnerable Versions:

20.03.0, 0:23.06.1-112.el8fdp, 0:22.12.1-94.el8fdp, 0:22.03.3-71.el8fdp, 0:23.03.1-100.el8fdp, 0:21.12.0-142.el8fdp, 0:23.09.0-136.el9fdp, 0:23.06.1-112.el9fdp, 0:22.12.1-94.el9fdp, 0:22.03.3-71.el9fdp, 0:23.03.1-100.el9fdp