PT-2022-9222 · Sealevel Systems · Seaconnect 370W

Francesco Benvenuto + 1 · Published 2022-02-04 · Updated 2023-06-30 · CVE-2021-21968

Positive Technologies (AI Summary)

CVSS v3.1

8.3

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Sealevel Systems, Inc. SeaConnect 370W version 1.3.34

Description A file write issue exists in the OTA update task functionality. This can be triggered by a specially-crafted MQTT payload, allowing for arbitrary file overwrite. An attacker can exploit this by performing a man-in-the-middle attack.

Recommendations For version 1.3.34, consider restricting access to the OTA update task functionality until a fix is available. As a temporary workaround, avoid using the MQTT protocol for updates, or ensure that all MQTT communications are encrypted and authenticated to prevent man-in-the-middle attacks.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2021-21968

Affected Products

Seaconnect 370W

References · 4

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1395 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2021-21968 · Security Note
• https://osv.dev/vulnerability/CVE-2021-21968 · Vendor Advisory
• https://t.me/cvenotify/26548 · Telegram Post