PT-2020-11897 · Zephyr · Zephyr

Published 2020-06-05 · Updated 2020-06-12 · CVE-2020-10071

Positive Technologies (AI Summary)

CVSS v3.1

9.8

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions zephyr version 2.2.0 and later versions

Description The issue is related to insufficient checking of the length field on publish messages in the Zephyr MQTT parsing code, which can lead to a buffer overflow and potentially allow remote code execution.

Recommendations For zephyr version 2.2.0 and later versions, at the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Improper Validation of Array Index

Weakness Enumeration

CWE-120

CWE-129

Related Identifiers

CVE-2020-10071

Affected Products

Zephyr

References · 6

• https://github.com/zephyrproject-rtos/zephyr/pull/23821/commits/989c4713ba429aa5105fe476b4d629718f3e6082 · Patch
• https://osv.dev/vulnerability/CVE-2020-10071 · Vendor Advisory
• https://docs.zephyrproject.org/latest/security/vulnerabilities.html#cve-2020-10071 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-10071 · Security Note
• https://research.nccgroup.com/2020/05/26/research-report-zephyr-and-mcuboot-security-assessment · Note
• https://zephyrprojectsec.atlassian.net/browse/ZEPSEC-86 · Note