Ovn: egress acls may be bypassed via specially crafted udp packet

8.1 CVSS

Vulnerability Description

A flaw was found in the Open Virtual Network (OVN). Specially crafted UDP packets may bypass egress access control lists (ACLs) in OVN installations configured with a logical switch with DNS records set on it and if the same switch has any egress ACLs configured. This issue can lead to unauthorized access to virtual machines and containers running on the OVN network.

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

No credits recorded in the NVD database.

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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, Red Hat OpenShift Container Platform 4

Vulnerable Versions:

22.03.8, 24.03.5, 24.09.2, 0:22.03.7-11.el8fdp, 0:22.06.0-273.el8fdp, 0:22.09.2-86.el8fdp, 0:22.12.1-107.el8fdp, 0:23.03.3-22.el8fdp, 0:23.06.4-26.el8fdp, 0:22.03.7-11.el9fdp, 0:22.06.0-273.el9fdp, 0:22.09.2-86.el9fdp, 0:22.12.1-107.el9fdp, 0:23.03.3-22.el9fdp, 0:23.06.4-26.el9fdp, 0:23.09.6-12.el9fdp, 0:24.03.4-53.el9fdp, 0:24.09.1-66.el9fdp