Vulnerability-Lookup

GHSA-XP54-622X-6X77

Vulnerability from github – Published: 2022-05-24 22:01 – Updated: 2022-05-24 22:01

Details

A denial-of-service issue was discovered in the MQTT library in Arm Mbed OS 2017-11-02. The function readMQTTLenString() is called by the function MQTTDeserialize_publish() to get the length and content of the MQTT topic name. In the function readMQTTLenString(), mqttstring->lenstring.len is a part of user input, which can be manipulated. An attacker can simply change it to a larger value to invalidate the if statement so that the statements inside the if statement are skipped, letting the value of mqttstring->lenstring.data default to zero. Later, curn is accessed, which points to mqttstring->lenstring.data. On an Arm Cortex-M chip, the value at address 0x0 is actually the initialization value for the MSP register. It is highly dependent on the actual firmware. Therefore, the behavior of the program is unpredictable from this time on.

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{
  "affected": [],
  "aliases": [
    "CVE-2019-17210"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2019-11-04T20:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A denial-of-service issue was discovered in the MQTT library in Arm Mbed OS 2017-11-02. The function readMQTTLenString() is called by the function MQTTDeserialize_publish() to get the length and content of the MQTT topic name. In the function readMQTTLenString(), mqttstring-\u003elenstring.len is a part of user input, which can be manipulated. An attacker can simply change it to a larger value to invalidate the if statement so that the statements inside the if statement are skipped, letting the value of mqttstring-\u003elenstring.data default to zero. Later, curn is accessed, which points to mqttstring-\u003elenstring.data. On an Arm Cortex-M chip, the value at address 0x0 is actually the initialization value for the MSP register. It is highly dependent on the actual firmware. Therefore, the behavior of the program is unpredictable from this time on.",
  "id": "GHSA-xp54-622x-6x77",
  "modified": "2022-05-24T22:01:03Z",
  "published": "2022-05-24T22:01:03Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2019-17210"
    },
    {
      "type": "WEB",
      "url": "https://github.com/ARMmbed/mbed-os/issues/11802"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2019-17210 (GCVE-0-2019-17210)

Vulnerability from cvelistv5 – Published: 2019-11-04 19:48 – Updated: 2024-08-05 01:33

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

https://github.com/ARMmbed/mbed-os/issues/11802

x_refsource_CONFIRM

Date Public ?

2019-11-03 00:00

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        "providerMetadata": {
          "dateUpdated": "2024-08-05T01:33:17.307Z",
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        "title": "CVE Program Container"
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    ],
    "cna": {
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          "versions": [
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            }
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        }
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      "problemTypes": [
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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.

Action not permitted

GHSA-XP54-622X-6X77

CVE-2019-17210 (GCVE-0-2019-17210)

Tags

Sightings

Nomenclature