Vulnerability · Published Jun 5, 2020 · Assigned by zephyr
CVE-2020-10062Packet length decoding error in MQTT
Critical 9.0
In plain English
A critical-severity security flaw in zephyr from zephyrproject-rtos. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.9% (higher than 87% of all known vulnerabilities).
Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)2.9%top 13.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| zephyrproject-rtos | zephyr | 2.2.0 – before unspecified |
Weakness: CWE-193 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
References
- https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-84 x_refsource_MISC
- https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10062 x_refsource_MISC
- https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/11b7a37d9a0b438270421b224221d91929843de4 x_refsource_MISC
- https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment x_refsource_MISC