PT-2020-3136 · Semtech · Loramac-Node

Published 2020-06-17 · Updated 2020-07-01 · CVE-2020-11068

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions LoRaMac-node versions prior to 4.4.4

Description The issue is related to a reception buffer overflow due to the lack of checking the received buffer size. This can be exploited by a remote attacker to cause a denial of service in end devices during the over-the-air activation (OTAA) process.

Recommendations For versions prior to 4.4.4, update to version 4.4.4 to resolve the issue. As a temporary workaround, consider implementing input validation to check the size of the received buffer before processing it. Restrict access to the vulnerable function until a patch is available.

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

BDU:2020-03428

CVE-2020-11068

GHSA-559P-6XGM-FPV9

Affected Products

Loramac-Node

References · 8

• https://github.com/Lora-net/LoRaMac-node/security/advisories/GHSA-559p-6xgm-fpv9 · Patch
• https://github.com/Lora-net/LoRaMac-node/commit/e3063a91daa7ad8a687223efa63079f0c24568e4 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2020-11068 · Security Note
• https://osv.dev/vulnerability/CVE-2020-11068 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-03428 · Security Note
• https://t.me/cibsecurity/13016 · Telegram Post
• https://blade.tencent.com/en/advisories/loradawn · Note
• https://t.me/cvenotify/4593 · Telegram Post