Vulnerabilities
Misconfiguration
Runtime Security
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CVE Vulnerabilities

CVE-2025-0650

Improper Access Control

Published: Jan 23, 2025 | Modified: Feb 06, 2025
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
RedHat/V2
RedHat/V3
8.1 IMPORTANT
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2025-0650
CWEhttps://cwe.mitre.org/data/definitions/284.html

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.

Weakness

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

Affected Software

Name Vendor Start Version End Version
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn22.03-0:22.03.7-11.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn22.06-0:22.06.0-273.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn22.09-0:22.09.2-86.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn22.12-0:22.12.1-107.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn23.03-0:23.03.3-22.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 8 RedHat ovn23.06-0:23.06.4-26.el8fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn22.03-0:22.03.7-11.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn22.06-0:22.06.0-273.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn22.09-0:22.09.2-86.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn22.12-0:22.12.1-107.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn23.03-0:23.03.3-22.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn23.06-0:23.06.4-26.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn23.09-0:23.09.6-12.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn24.03-0:24.03.4-53.el9fdp *
Fast Datapath for Red Hat Enterprise Linux 9 RedHat ovn24.09-0:24.09.1-66.el9fdp *
Ovn Ubuntu devel *
Ovn Ubuntu focal *
Ovn Ubuntu jammy *
Ovn Ubuntu noble *
Ovn Ubuntu oracular *
Ovn Ubuntu upstream *

Extended Description

Access control involves the use of several protection mechanisms such as:

When any mechanism is not applied or otherwise fails, attackers can compromise the security of the product by gaining privileges, reading sensitive information, executing commands, evading detection, etc. There are two distinct behaviors that can introduce access control weaknesses:

Potential Mitigations

  • Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
  • Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.

References

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