Vulnerability-Lookup

CVE-2023-3966 (GCVE-0-2023-3966)

Vulnerability from cvelistv5 – Published: 2024-02-22 12:15 – Updated: 2025-02-13 17:03

Title

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

Summary

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.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-02-22 15:42 UTC

CWE

CWE-248 - Uncaught Exception

Assigner

redhat redhat root

References

4 references

URL	Tags
https://access.redhat.com/security/cve/CVE-2023-3966	vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2178363	issue-trackingx_refsource_REDHAT
https://lists.fedoraproject.org/archives/list/pac…
https://lists.fedoraproject.org/archives/list/pac…

Impacted products

8 products

Vendor	Product	Version	CPE status
n/a	openvswitch	Unaffected: 3.1.0
Red Hat	Fast Datapath for RHEL 7	cpe:/o:redhat:enterprise_linux:7::fastdatapath
Red Hat	Fast Datapath for RHEL 8	cpe:/o:redhat:enterprise_linux:8::fastdatapath
Red Hat	Fast Datapath for RHEL 9	cpe:/o:redhat:enterprise_linux:9::fastdatapath
Red Hat	Red Hat Enterprise Linux 7	cpe:/o:redhat:enterprise_linux:7
Red Hat	Red Hat OpenShift Container Platform 3.11	cpe:/a:redhat:openshift:3.11
RDO	OpenStack RDO		guessed
Fedora	Fedora		guessed

Date Public

2024-02-08 00:00

Credits

This issue was discovered by Haresh Khandelwal (Red Hat) and Timothy Redaelli (Red Hat).

Show details on NVD website

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SUSE-SU-2024:0738-1

Vulnerability from csaf_suse - Published: 2024-03-01 11:20 - Updated: 2024-03-01 11:20

Summary

Security update for openvswitch3

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 166 products

Open the full advisory

SUSE-SU-2024:0738-2

Vulnerability from csaf_suse - Published: 2024-03-01 11:20 - Updated: 2024-03-01 11:20

Summary

Security update for openvswitch3

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 44 products

Open the full advisory

SUSE-SU-2024:0912-1

Vulnerability from csaf_suse - Published: 2024-03-16 10:33 - Updated: 2024-03-16 10:33

Summary

Security update for openvswitch

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 120 products

Open the full advisory

SUSE-SU-2024:0922-1

Vulnerability from csaf_suse - Published: 2024-03-18 13:03 - Updated: 2024-03-18 13:03

Summary

Security update for openvswitch

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 150 products

Open the full advisory

SUSE-SU-2024:0937-1

Vulnerability from csaf_suse - Published: 2024-03-19 14:34 - Updated: 2024-03-19 14:34

Summary

Security update for openvswitch

Severity

Important

Scope

1 vulnerability in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 336 products

Open the full advisory

SUSE-SU-2026:0280-1

Vulnerability from csaf_suse - Published: 2026-01-23 15:33 - Updated: 2026-09-16 19:00

Summary

Security update for openvswitch

Severity

Important

Scope

7 vulnerabilities in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 242 products

Open the full advisory

SUSE-SU-2026:0290-1

Vulnerability from csaf_suse - Published: 2026-01-26 10:34 - Updated: 2026-09-16 19:00

Summary

Security update for openvswitch3

Severity

Important

Scope

7 vulnerabilities in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 368 products

Open the full advisory

SUSE-SU-2026:20049-1

Vulnerability from csaf_suse - Published: 2026-01-09 10:56 - Updated: 2026-09-19 15:38

Summary

Security update for openvswitch

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 4 products

Open the full advisory

SUSE-SU-2026:20061-1

Vulnerability from csaf_suse - Published: 2026-01-08 14:43 - Updated: 2026-09-16 19:25

Summary

Security update for openvswitch

Severity

Important

Scope

4 vulnerabilities in this advisory, including CVE-2023-3966.

CVE-2023-3966

7.5 (High)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Recommended: 8 products

Open the full advisory

UBUNTU-CVE-2023-3966 (CVE-2023-3966)

Vulnerability from osv_ubuntu – Published: 2024-02-08 00:00 – Updated: 2025-09-08 16:55 – Source website

Details

Severity

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

7.5 (High)


                    
                      CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2023-3966	REPORT
	https://www.openwall.com/lists/oss-security/2024/…	REPORT
	https://mail.openvswitch.org/pipermail/ovs-dev/20…	REPORT
	https://ubuntu.com/security/notices/USN-6690-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2023-3966	REPORT

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{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvswitch-common",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-pki",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-source",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-switch",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-switch-dpdk",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-test",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-testcontroller",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "openvswitch-vtep",
            "binary_version": "2.13.8-0ubuntu1.4"
          },
          {
            "binary_name": "python3-openvswitch",
            "binary_version": "2.13.8-0ubuntu1.4"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "openvswitch",
        "purl": "pkg:deb/ubuntu/openvswitch@2.13.8-0ubuntu1.4?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.13.8-0ubuntu1.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.12.0-0ubuntu1",
        "2.12.0-0ubuntu2",
        "2.12.1~git20191107.7accd1302-0ubuntu1",
        "2.12.90~git20200107.af683565b-0ubuntu1",
        "2.12.90~git20200107.af683565b-0ubuntu2",
        "2.12.90~git20200107.af683565b-0ubuntu3",
        "2.13.0~git20200127.dbdf66c29-0ubuntu2",
        "2.13.0~git20200212.15ae9db33-0ubuntu1",
        "2.13.0~git20200212.15ae9db33-0ubuntu2",
        "2.13.0-0ubuntu1",
        "2.13.1-0ubuntu0.20.04.1",
        "2.13.1-0ubuntu0.20.04.3",
        "2.13.1-0ubuntu0.20.04.4",
        "2.13.3-0ubuntu0.20.04.1",
        "2.13.3-0ubuntu0.20.04.2",
        "2.13.5-0ubuntu1",
        "2.13.8-0ubuntu1",
        "2.13.8-0ubuntu1.1",
        "2.13.8-0ubuntu1.2",
        "2.13.8-0ubuntu1.3"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "openvswitch-common",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-ipsec",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-pki",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-source",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-switch",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-switch-dpdk",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-test",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-testcontroller",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "openvswitch-vtep",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          },
          {
            "binary_name": "python3-openvswitch",
            "binary_version": "2.17.9-0ubuntu0.22.04.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "openvswitch",
        "purl": "pkg:deb/ubuntu/openvswitch@2.17.9-0ubuntu0.22.04.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.17.9-0ubuntu0.22.04.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.16.0-0ubuntu2",
        "2.16.0-0ubuntu3",
        "2.16.0-0ubuntu4",
        "2.17.0~git20220105.0d1ffb7-0ubuntu1",
        "2.17.0~git20220118.1b9fd88-0ubuntu1",
        "2.17.0~git20220121.109d024-0ubuntu1",
        "2.17.0-0ubuntu1",
        "2.17.2-0ubuntu0.22.04.1",
        "2.17.2-0ubuntu0.22.04.2",
        "2.17.3-0ubuntu0.22.04.1",
        "2.17.3-0ubuntu0.22.04.2",
        "2.17.5-0ubuntu0.22.04.2",
        "2.17.7-0ubuntu0.22.04.1",
        "2.17.8-0ubuntu0.22.04.1"
      ]
    }
  ],
  "aliases": [],
  "details": "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.",
  "id": "UBUNTU-CVE-2023-3966",
  "modified": "2025-09-08T16:55:49Z",
  "published": "2024-02-08T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-3966"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2024/02/08/3"
    },
    {
      "type": "REPORT",
      "url": "https://mail.openvswitch.org/pipermail/ovs-dev/2024-February/411702.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6690-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-3966"
    }
  ],
  "related": [
    "USN-6690-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2023-3966"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2023-3966 (GCVE-0-2023-3966)

UBUNTU-CVE-2023-3966 (CVE-2023-3966)

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