PT-2022-10334 · Zephyr · Zephyr

Bronallo-Bd + 1 · Published 2022-06-28 · Updated 2023-06-26 · CVE-2021-3433

Positive Technologies (AI Summary)

CVSS v3.1

4.0

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Zephyr versions >= v2.5.0

Description The issue arises from an invalid channel map in CONNECT IND, resulting in a deadlock due to improper check or handling of exceptional conditions. This is classified as CWE-703.

Recommendations For Zephyr versions >= v2.5.0, consider temporarily disabling the CONNECT IND functionality until a patch is available to prevent deadlocks caused by invalid channel maps. Restrict access to the vulnerable module to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Weakness Enumeration

CWE-703

Related Identifiers

CVE-2021-3433

GHSA-3C2F-W4V6-QXRP

Affected Products

Zephyr

References · 6

• http://github.com/zephyrproject-rtos/zephyr/security/advisories/GHSA-3c2f-w4v6-qxrp · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-3433 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-3433 · Security Note
• https://t.me/cvenotify/53044 · Telegram Post
• https://t.me/cvenotify/32321 · Telegram Post
• https://t.me/cibsecurity/45331 · Telegram Post