PT-2021-20024 · Eq 3 · Eq-3 Homematic Ccu2+1

Hendrik Hagendorn · Published 2021-07-22 · Updated 2021-09-21 · CVE-2021-33032

Positive Technologies (AI Summary)

CVSS v3.1

10

Critical

Base vector

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

Name of the Vulnerable Software and Affected Versions eQ-3 HomeMatic CCU2 firmware versions up to and including 2.57.5 eQ-3 HomeMatic CCU3 firmware versions up to and including 3.57.5

Description A Remote Code Execution issue in the WebUI component allows remote unauthenticated attackers to execute system commands as root via a simple HTTP request.

Recommendations For eQ-3 HomeMatic CCU2 firmware versions up to and including 2.57.5, update to a version later than 2.57.5 to resolve the issue. For eQ-3 HomeMatic CCU3 firmware versions up to and including 3.57.5, update to a version later than 3.57.5 to resolve the issue.

Exploit

Fix

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2021-33032

Affected Products

Eq-3 Homematic Ccu2

Eq-3 Homematic Ccu3

References · 5

• 🔥 https://novag.github.io/posts/homematic-unauthenticated-remote-code-execution · Exploit
• https://eq-3.de/downloads/software/firmware/ccu3-firmware/CCU3-Changelog.3.59.6.pdf · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-33032 · Vendor Advisory
• https://eq-3.de/downloads/software/HM-CCU2-Firmware_Updates/HM-CCU-2.59.7/HM-CCU2-Changelog.2.59.7.pdf · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-33032 · Security Note