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ZephyrCVELIST:CVE-2020-10071

HistoryJun 05, 2020 - 5:37 p.m.

CVE-2020-10071 Insufficient publish message length validation in MQTT

2020-06-0517:37:37

CWE-129

CWE-120

zephyr

www.cve.org

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

Confidence

High

EPSS

0.066

Percentile

93.8%

JSON

The Zephyr MQTT parsing code performs insufficient checking of the length field on publish messages, allowing a buffer overflow and potentially remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

CNA Affected

[
  {
    "product": "zephyr",
    "vendor": "zephyrproject-rtos",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "affected",
        "version": "2.2.0",
        "versionType": "custom"
      }
    ]
  }
]

References

docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071

github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082

research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment

zephyrprojectsec.atlassian.net/browse/ZEPSEC-86

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

Confidence

High

EPSS

0.066

Percentile

93.8%

JSON

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