Quantum Secular Labs / Blog / Advisories
CVE-2018-9162: Contec Touch Smart Home Firmware: Missing Authentication for Critical Functionality
CVE-2018-9162 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists Contec Touch Smart Home Firmware as the affected product. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
Contec Smart Home 4.15 devices do not require authentication for new_user.php, edit_user.php, delete_user.php, and user.php, as demonstrated by changing the admin password and then obtaining control over doors.
Severity breakdown
CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-306: Missing Authentication for Critical Functionality
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.
Affected products
- Contec Touch Smart Home Firmware: 4.15