CVE-2018-7298 — HIGH (8.1) — White Hats Nepal

Vulnerability Description

In /usr/local/etc/config/addons/mh/loopupd.sh on eQ-3 AG HomeMatic CCU2 2.29.22 devices, software update packages are downloaded via the HTTP protocol, which does not provide any cryptographic protection of the downloaded contents. An attacker with a privileged network position (which could be obtained via DNS spoofing of www.meine-homematic.de or other approaches) can exploit this issue in order to provide arbitrary malicious firmware updates to the CCU2. This can result in a full system compromise.

CVSS Score

8.1

HIGH

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Eq-3	Homematic Central Control Unit Ccu2 Firmware	2.29.22
Eq-3	Homematic Central Control Unit Ccu2	-

Related Weaknesses (CWE)

CWE-319

References

http://atomic111.github.io/article/homematic-ccu2-firmware-via-plain-httpThird Party Advisory
http://atomic111.github.io/article/homematic-ccu2-firmware-via-plain-httpThird Party Advisory

FAQ

What is CVE-2018-7298?

CVE-2018-7298 is a vulnerability with a CVSS score of 8.1 (HIGH). In /usr/local/etc/config/addons/mh/loopupd.sh on eQ-3 AG HomeMatic CCU2 2.29.22 devices, software update packages are downloaded via the HTTP protocol, which does not provide any cryptographic protect...

How severe is CVE-2018-7298?

CVE-2018-7298 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2018-7298?

Check the references section above for vendor advisories and patch information. Affected products include: Eq-3 Homematic Central Control Unit Ccu2 Firmware, Eq-3 Homematic Central Control Unit Ccu2.