Vulnerability-Lookup

CVE-2023-28366 (GCVE-0-2023-28366)

Vulnerability from cvelistv5 – Published: 2023-09-01 00:00 – Updated: 2025-06-26 13:59

Summary

The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.

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 2025-06-26 13:57 UTC

CWE

n/a
CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

mitre mitre root

References

7 references

URL	Tags
https://github.com/eclipse/mosquitto/compare/v2.0…
https://www.compass-security.com/fileadmin/Resear…
https://mosquitto.org/blog/2023/08/version-2-0-16…
https://github.com/eclipse/mosquitto/commit/6113e…
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisory
https://www.debian.org/security/2023/dsa-5511	vendor-advisory
https://security.gentoo.org/glsa/202401-09	vendor-advisory

Show details on NVD website

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    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://mosquitto.org/blog/2023/08/version-2-0-16-released/\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/\", \"name\": \"FEDORA-2023-9adc4be8b0\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://www.debian.org/security/2023/dsa-5511\", \"name\": \"DSA-5511\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202401-09\", \"name\": \"GLSA-202401-09\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T12:38:25.296Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-28366\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-06-26T13:57:37.428410Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-06-26T13:58:30.564Z\"}}], \"cna\": {\"affected\": [{\"vendor\": \"n/a\", \"product\": \"n/a\", \"versions\": [{\"status\": \"affected\", \"version\": \"n/a\"}]}], \"references\": [{\"url\": \"https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16\"}, {\"url\": \"https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt\"}, {\"url\": \"https://mosquitto.org/blog/2023/08/version-2-0-16-released/\"}, {\"url\": \"https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9\"}, {\"url\": \"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KJ2FMBGVVQEQWTTQB7YLKTAHMX2UM66X/\", \"name\": \"FEDORA-2023-9adc4be8b0\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://www.debian.org/security/2023/dsa-5511\", \"name\": \"DSA-5511\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202401-09\", \"name\": \"GLSA-202401-09\", \"tags\": [\"vendor-advisory\"]}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"text\", \"description\": \"n/a\"}]}], \"providerMetadata\": {\"orgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"shortName\": \"mitre\", \"dateUpdated\": \"2024-01-07T10:06:19.321Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-28366\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-06-26T13:59:02.058Z\", \"dateReserved\": \"2023-03-15T00:00:00.000Z\", \"assignerOrgId\": \"8254265b-2729-46b6-b9e3-3dfca2d5bfca\", \"datePublished\": \"2023-09-01T00:00:00.000Z\", \"assignerShortName\": \"mitre\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

RHSA-2024_1061

Vulnerability from csaf_redhat - Published: 2024-02-29 20:37 - Updated: 2024-11-24 12:31

Summary

Red Hat Security Advisory: Red Hat Satellite 6 security and bug fix update

Severity

Moderate

Scope

5 vulnerabilities in this advisory, including CVE-2023-28366.

CVE-2023-28366

A memory leak vulnerability was found in Eclipse Mosquitto. This issue is triggered by malicious initial packets or certain client actions and may allow a remote attacker to the deplete system resources causing memory exhaustion, leading to a disruption in services and a denial of service condition.

7.5 (High)


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

Fixed: 8 products Known not affected: 103 products

https://access.redhat.com/errata/RHSA-2024:1061

Open the full advisory

SCA-2025-0006

Vulnerability from csaf_sick - Published: 2025-04-28 13:00 - Updated: 2025-04-28 13:00

Summary

Vulnerability affecting picoScan and multiScan

Scope

23 vulnerabilities in this advisory, including CVE-2023-28366.

CVE-2023-28366

7.5 (High)


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

Known not affected: 2 products

Open the full advisory

ubuntu-cve-2023-28366

Vulnerability from osv_ubuntu

Published

2023-09-01 16:15

Modified

2026-04-22 07:45

Summary

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-2023-28366	REPORT
	https://mosquitto.org/blog/2023/08/version-2-0-16…	REPORT
	https://github.com/eclipse/mosquitto/commit/6113e…	REPORT
	https://github.com/eclipse/mosquitto/commit/6113e…	REPORT
	https://www.compass-security.com/fileadmin/Resear…	REPORT
	https://github.com/eclipse/mosquitto/compare/v2.0…	REPORT
	https://ubuntu.com/security/notices/USN-6492-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2023-28366	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmosquitto1",
            "binary_version": "1.4.8-1ubuntu0.16.04.7+esm2"
          },
          {
            "binary_name": "libmosquittopp1",
            "binary_version": "1.4.8-1ubuntu0.16.04.7+esm2"
          },
          {
            "binary_name": "mosquitto",
            "binary_version": "1.4.8-1ubuntu0.16.04.7+esm2"
          },
          {
            "binary_name": "mosquitto-clients",
            "binary_version": "1.4.8-1ubuntu0.16.04.7+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "mosquitto",
        "purl": "pkg:deb/ubuntu/mosquitto@1.4.8-1ubuntu0.16.04.7+esm2?arch=source\u0026distro=esm-apps/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.3-1",
        "1.4.4-1",
        "1.4.7-1",
        "1.4.8-1",
        "1.4.8-1build1",
        "1.4.8-1ubuntu0.16.04.1",
        "1.4.8-1ubuntu0.16.04.2",
        "1.4.8-1ubuntu0.16.04.3",
        "1.4.8-1ubuntu0.16.04.4",
        "1.4.8-1ubuntu0.16.04.5",
        "1.4.8-1ubuntu0.16.04.6",
        "1.4.8-1ubuntu0.16.04.7",
        "1.4.8-1ubuntu0.16.04.7+esm1",
        "1.4.8-1ubuntu0.16.04.7+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmosquitto1",
            "binary_version": "1.4.15-2ubuntu0.18.04.3+esm2"
          },
          {
            "binary_name": "libmosquittopp1",
            "binary_version": "1.4.15-2ubuntu0.18.04.3+esm2"
          },
          {
            "binary_name": "mosquitto",
            "binary_version": "1.4.15-2ubuntu0.18.04.3+esm2"
          },
          {
            "binary_name": "mosquitto-clients",
            "binary_version": "1.4.15-2ubuntu0.18.04.3+esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "mosquitto",
        "purl": "pkg:deb/ubuntu/mosquitto@1.4.15-2ubuntu0.18.04.3+esm2?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.4.12-1",
        "1.4.14-1",
        "1.4.14-2",
        "1.4.14-2build1",
        "1.4.15-1",
        "1.4.15-2",
        "1.4.15-2ubuntu0.18.04.1",
        "1.4.15-2ubuntu0.18.04.2",
        "1.4.15-2ubuntu0.18.04.3",
        "1.4.15-2ubuntu0.18.04.3+esm1",
        "1.4.15-2ubuntu0.18.04.3+esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "libmosquitto1",
            "binary_version": "1.6.9-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "libmosquittopp1",
            "binary_version": "1.6.9-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "mosquitto",
            "binary_version": "1.6.9-1ubuntu0.1~esm2"
          },
          {
            "binary_name": "mosquitto-clients",
            "binary_version": "1.6.9-1ubuntu0.1~esm2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "mosquitto",
        "purl": "pkg:deb/ubuntu/mosquitto@1.6.9-1ubuntu0.1~esm2?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.6.6-1",
        "1.6.7-1",
        "1.6.8-1",
        "1.6.8-2",
        "1.6.9-1~build1",
        "1.6.9-1",
        "1.6.9-1ubuntu0.1~esm1",
        "1.6.9-1ubuntu0.1~esm2"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libmosquitto1",
            "binary_version": "2.0.11-1ubuntu1.1"
          },
          {
            "binary_name": "libmosquittopp1",
            "binary_version": "2.0.11-1ubuntu1.1"
          },
          {
            "binary_name": "mosquitto",
            "binary_version": "2.0.11-1ubuntu1.1"
          },
          {
            "binary_name": "mosquitto-clients",
            "binary_version": "2.0.11-1ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "mosquitto",
        "purl": "pkg:deb/ubuntu/mosquitto@2.0.11-1ubuntu1.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.11-1ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.0.11-1",
        "2.0.11-1build1",
        "2.0.11-1ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "The broker in Eclipse Mosquitto 1.3.2 through 2.x before 2.0.16 has a memory leak that can be abused remotely when a client sends many QoS 2 messages with duplicate message IDs, and fails to respond to PUBREC commands. This occurs because of mishandling of EAGAIN from the libc send function.",
  "id": "UBUNTU-CVE-2023-28366",
  "modified": "2026-04-22T07:45:17Z",
  "published": "2023-09-01T16:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2023-28366"
    },
    {
      "type": "REPORT",
      "url": "https://mosquitto.org/blog/2023/08/version-2-0-16-released/"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/mosquitto/commit/6113eac95a9df634fbc858be542c4a0456bfe7b9"
    },
    {
      "type": "REPORT",
      "url": "https://www.compass-security.com/fileadmin/Research/Advisories/2023_02_CSNC-2023-001_Eclipse_Mosquitto_Memory_Leak.txt"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/eclipse/mosquitto/compare/v2.0.15...v2.0.16"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-6492-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2023-28366"
    }
  ],
  "related": [
    "USN-6492-1"
  ],
  "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-2023-28366"
  ]
}

WID-SEC-W-2023-2724

Vulnerability from csaf_certbund - Published: 2023-10-22 22:00 - Updated: 2023-10-22 22:00

Summary

IBM Integration Bus: Mehrere Schwachstellen ermöglichen Denial of Service

Severity

Mittel

Scope

4 vulnerabilities in this advisory, including CVE-2023-28366.

CVE-2023-28366

In IBM Integration Bus existieren mehrere Schwachstellen. Diese bestehen in Komponenten von Drittanbietern und sind auf Speicherlecks sowie nicht abgefangene Excepetions zurückzuführen. Ein entfernter, anonymer Angreifer kann diese Schwachstellen ausnutzen, um einen Denial of Service Zustand herbeizuführen.

Known affected: 1 product

Open the full advisory

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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

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-2023-28366 (GCVE-0-2023-28366)

RHSA-2024_1061

SCA-2025-0006

ubuntu-cve-2023-28366

Vulnerability from osv_ubuntu

WID-SEC-W-2023-2724

Tags

Sightings

Nomenclature

Related by attack behaviour