CWE
306
Advisory Published
Updated

CVE-2019-10121

First published: Wed Jul 10 2019(Updated: )

eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 use session IDs for authentication but lack authorization checks. An attacker can obtain a session ID via the user authentication dialogue, aka HMCCU-153. This leads to automatic login as admin.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Eq-3 Ccu3 Firmware<3.43.15
Eq-3 Ccu3
Eq-3 Ccu2 Firmware<2.41.8
Eq-3 Ccu2

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Frequently Asked Questions

  • What is the vulnerability ID for this vulnerability?

    The vulnerability ID for this vulnerability is CVE-2019-10121.

  • What is the severity rating for CVE-2019-10121?

    The severity rating for CVE-2019-10121 is 9.8 (critical).

  • What is the description of CVE-2019-10121?

    CVE-2019-10121 is a vulnerability found in eQ-3 HomeMatic CCU2 devices before 2.41.8 and CCU3 devices before 3.43.15 that use session IDs for authentication but lack authorization checks, allowing an attacker to obtain a session ID via the user authentication dialogue and gain automatic login as admin.

  • Which software versions are affected by CVE-2019-10121?

    CVE-2019-10121 affects eQ-3 HomeMatic CCU2 devices with firmware versions up to (but not including) 2.41.8, and CCU3 devices with firmware versions up to (but not including) 3.43.15.

  • How can I mitigate CVE-2019-10121?

    To mitigate CVE-2019-10121, it is recommended to update the firmware of the affected devices to version 2.41.8 or higher for CCU2 and 3.43.15 or higher for CCU3.

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