Vulnerability-Lookup

OESA-2023-1774 (CVE-2023-3592)

Vulnerability from osv_openeuler – Published: 2023-10-28 11:06 – Updated: 2026-08-06 11:06 – Source website

Summary

mosquitto security update

Details

Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for "machine to machine" messaging such as with low power sensors or mobile devices such as phones, embedded computers or micro-controllers like the Arduino.

Security Fix(es):

In Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property types. (CVE-2023-3592)

In Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6

(CVE-2023-5632)

Severity

7.5 (High)


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

References

URL

Type

	https://www.openeuler.org/en/security/safety-bull…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-3592	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2023-5632	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "mosquitto-devel-2.0.16-1.oe2203sp2.aarch64.rpm",
          "mosquitto-2.0.16-1.oe2203sp2.aarch64.rpm",
          "mosquitto-debugsource-2.0.16-1.oe2203sp2.aarch64.rpm",
          "mosquitto-debuginfo-2.0.16-1.oe2203sp2.aarch64.rpm"
        ],
        "src": [
          "mosquitto-2.0.16-1.oe2203sp2.src.rpm"
        ],
        "x86_64": [
          "mosquitto-debugsource-2.0.16-1.oe2203sp2.x86_64.rpm",
          "mosquitto-devel-2.0.16-1.oe2203sp2.x86_64.rpm",
          "mosquitto-2.0.16-1.oe2203sp2.x86_64.rpm",
          "mosquitto-debuginfo-2.0.16-1.oe2203sp2.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:22.03-LTS-SP2",
        "name": "mosquitto",
        "purl": "pkg:rpm/openEuler/mosquitto\u0026distro=openEuler-22.03-LTS-SP2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.16-1.oe2203sp2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "Mosquitto is an open source message broker that implements the MQ Telemetry Transport protocol version 3.1 and 3.1.1 MQTT provides a lightweight method of carrying out messaging using a publish/subscribe model. This makes it suitable for \u0026quot;machine to machine\u0026quot; messaging such as with low power sensors or mobile devices such as phones, embedded computers or micro-controllers like the Arduino.\r\n\r\nSecurity Fix(es):\r\n\r\nIn Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property types.\n(CVE-2023-3592)\r\n\r\nIn Eclipse Mosquito before and including 2.0.5, establishing a connection to the mosquitto server without sending data causes the EPOLLOUT event to be added, which results excessive CPU consumption. This could be used by a malicious actor to perform denial of service type attack. This issue is fixed in 2.0.6\r\n\r\n\n(CVE-2023-5632)",
  "id": "OESA-2023-1774",
  "modified": "2026-08-06T11:06:13Z",
  "published": "2023-10-28T11:06:13Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1774"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-3592"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-5632"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "mosquitto security update",
  "upstream": [
    "CVE-2023-3592",
    "CVE-2023-5632"
  ]
}

CVE-2023-3592 (GCVE-0-2023-3592)

Vulnerability from cvelistv5 – Published: 2023-10-02 19:01 – Updated: 2025-02-13 16:55

Summary

In Mosquitto before 2.0.16, a memory leak occurs when clients send v5 CONNECT packets with a will message that contains invalid property types.

Severity

5.8 (Medium)


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

CWE

CWE-401 - Missing Release of Memory after Effective Lifetime

Assigner

eclipse mitre root

References

2 references

URL	Tags
https://mosquitto.org/blog/2023/08/version-2-0-16…
https://security.gentoo.org/glsa/202401-09

Impacted products

1 product

Vendor	Product	Version
Eclipse	Mosquitto	Affected: 0 , < 2.0.16 (semver)

Show details on NVD website

JSON

To clipboard

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CVE-2023-5632 (GCVE-0-2023-5632)

Vulnerability from cvelistv5 – Published: 2023-10-18 08:34 – Updated: 2024-09-13 14:50

Title

Unconditionally adding an event to the epoll causes excessive CPU consumption

Summary

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 2024-09-13 14:50 UTC

CWE

CWE-834 - Excessive Iteration

Assigner

eclipse mitre root

References

2 references

URL	Tags
https://github.com/eclipse/mosquitto/pull/2053	patchissue-tracking
https://github.com/eclipse/mosquitto/commit/18bad…	patch

Impacted products

1 product

Vendor	Product	Version
Eclipse	Mosquitto	Affected: 0 , ≤ 2.0.5 (custom)

Credits

Przemysław Zygmunt (acsoftware.pl)

Show details on NVD website

JSON

To clipboard

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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

OESA-2023-1774 (CVE-2023-3592)

CVE-2023-3592 (GCVE-0-2023-3592)

CVE-2023-5632 (GCVE-0-2023-5632)

Tags

Sightings

Nomenclature

Related by attack behaviour