Quantum Secular Labs / Blog / Advisories
CVE-2017-16340: Insteon Hub Firmware: Buffer overflow
CVE-2017-16340 is rated critical with a CVSS v3.1 base score of 9.9 and NVD lists Insteon Hub Firmware as the affected product. Per its scoring, it can be exploited over the network, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
An attacker could send an authenticated HTTP request to trigger this vulnerability in Insteon Hub running firmware version 1012. At 0x9d01c0e8 the value for the s_dport key is copied using strcpy to the buffer at 0xa000180c. This buffer is 6 bytes large, sending anything longer will cause a buffer overflow.
Severity breakdown
CVSS v3.1 9.9: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/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: Low. A basic user account is enough.
- User interaction: None. No action from any user is needed.
- Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
- 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-120: Buffer Copy without Checking Size of Input
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.
Affected products
- Insteon Hub Firmware: 1012