Vulnerability-Lookup

UBUNTU-CVE-2018-18765 (CVE-2018-18765)

Vulnerability from osv_ubuntu – Published: 2018-10-29 12:29 – Updated: 2025-07-16 04:54 – Source website

Withdrawn 2025-07-18

Details

An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.

Severity

9.1 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2018-18765	REPORT
	https://www.cve.org/CVERecord?id=CVE-2018-18765	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "smplayer",
            "binary_version": "19.10.2~ds0-1build1"
          },
          {
            "binary_name": "smplayer-dbgsym",
            "binary_version": "19.10.2~ds0-1build1"
          },
          {
            "binary_name": "smplayer-l10n",
            "binary_version": "19.10.2~ds0-1build1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "smplayer",
        "purl": "pkg:deb/ubuntu/smplayer@19.10.2~ds0-1build1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "19.10.2~ds0-1build1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "18.10.0~ds0-1",
        "19.10.2~ds0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "An exploitable arbitrary memory read vulnerability exists in the MQTT packet-parsing functionality of Cesanta Mongoose 6.13. It is a heap-based buffer over-read in mg_mqtt_next_subscribe_topic. A specially crafted MQTT SUBSCRIBE packet can cause an arbitrary out-of-bounds memory read potentially resulting in information disclosure and denial of service. An attacker needs to send a specially crafted MQTT packet over the network to trigger this vulnerability.",
  "id": "UBUNTU-CVE-2018-18765",
  "modified": "2025-07-16T04:54:05Z",
  "published": "2018-10-29T12:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-18765"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-18765"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-18765"
  ],
  "withdrawn": "2025-07-18T16:44:48Z"
}

CVE-2018-18765 (GCVE-0-2018-18765)

Vulnerability from cvelistv5 – Published: 2018-10-28 19:00 – Updated: 2024-08-05 11:16

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2230 records in the last 180 days details

References

2 references

URL	Tags
https://twitter.com/thracky/status/1059472674940993541	x_refsource_MISC
https://github.com/TiffanyBlue/PoCbyMyself/blob/m…	x_refsource_MISC

Date Public

2018-10-28 00:00

Show details on NVD website

JSON

To clipboard

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          "dateUpdated": "2024-08-05T11:16:00.424Z",
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            ],
            "url": "https://twitter.com/thracky/status/1059472674940993541"
          },
          {
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              "x_refsource_MISC",
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            ],
            "url": "https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20mg_mqtt_next_subscribe_topic%20heap%20buffer%20overflow.md"
          }
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        }
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      "providerMetadata": {
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          "url": "https://github.com/TiffanyBlue/PoCbyMyself/blob/master/mongoose6.13/mqtt/Cesanta%20Mongoose%20MQTT%20mg_mqtt_next_subscribe_topic%20heap%20buffer%20overflow.md"
        }
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  },
  "cveMetadata": {
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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.

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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.

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