PT-2021-20536 · Zephyr · Zephyr

Bronallo-Bd + 1 · Published 2021-10-19 · Updated 2023-07-07 · CVE-2021-3454

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Zephyr versions 2.4.0 and later

Description: The issue is caused by a truncated L2CAP K-frame, leading to an assertion failure. This is due to improper handling of length parameter inconsistency and a reachable assertion.

Recommendations: For Zephyr versions 2.4.0 and later, update to a version that contains a fix for the improper handling of length parameter inconsistency and reachable assertion. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Assertion Failure

Weakness Enumeration

CWE-617

CWE-130

Related Identifiers

CVE-2021-3454

GHSA-FX88-6C29-VRP3

Affected Products

Zephyr

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2021-3454 · Security Note
• http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-fx88-6c29-vrp3 · Patch
• https://osv.dev/vulnerability/CVE-2021-3454 · Vendor Advisory
• https://t.me/cibsecurity/30847 · Telegram Post