PT-2020-8936 · Ecobee · Ecobee4

Published 2020-04-14 · Updated 2020-08-24 · CVE-2018-6402

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Ecobee Ecobee4 version 4.2.0.171

Description The issue allows an attacker to force the device to deauthenticate and connect to an unencrypted Wi-Fi network with the same SSID, even if the device settings specify the use of encryption such as WPA2, as long as the competing network has a stronger signal. This is similar to an "Evil Twin" attack, where the attacker sets up a nearby SSID.

Recommendations For Ecobee Ecobee4 version 4.2.0.171, consider disabling the Wi-Fi connection until a patch is available, and restrict access to the device to minimize the risk of exploitation. As a temporary workaround, avoid using unencrypted Wi-Fi networks and ensure that the device is connected to a secure network with a strong signal. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Use of a Broken Cryptographic Algorithm

Weakness Enumeration

CWE-327

Related Identifiers

CVE-2018-6402

Affected Products

Ecobee4

References · 5

• 🔥 https://garrettmiller.github.io/meross-mss110-vuln · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-6402 · Security Note
• https://osv.dev/vulnerability/CVE-2018-6402 · Vendor Advisory
• https://t.me/cvenotify/2716 · Telegram Post
• https://t.me/cibsecurity/11237 · Telegram Post