Home/CVE/An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote
CVE

CVE-2020-10062

An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote

An off-by-one error in the Zephyr project MQTT packet length decoder can result in memory corruption and possible remote code execution. NCC-ZEP-031 This issue affects: zephyrproject-rtos zephyr version 2.2.0 and later versions.

CRITICAL · CVSS 9 EPSS 0.05817
Schedule remediation
  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-193Off-by-one Error
CWE-193Off-by-one Error
▤

Affected Products & Versions

1
zephyrproject zephyr<= 2.2.0
▣

Scoring & Timeline

9
CRITICAL · CVSS v3.1 · vulnerabilities@zephyrproject.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Jun 2020 · 06:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
🔗

References & Sources

4
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10062Vendor Advisory
https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/11b7a37d9a0b438270421b224221d91929843de4PatchThird Party Advisory
https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessmentThird Party Advisory
https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84Third Party Advisory
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