CVE-2018-3833 : Security Advisory and Response
Learn about CVE-2018-3833, an improper access control vulnerability in Insteon Hub firmware version 1013 that allows attackers to downgrade firmware, compromising device security. Find mitigation steps and prevention measures.
A vulnerability has been identified in Insteon Hub with firmware version 1013 that allows attackers to exploit a firmware downgrade, potentially compromising the device's security.
Understanding CVE-2018-3833
This CVE involves an improper access control issue in Insteon Hub's firmware upgrade process, enabling attackers to install older firmware versions.
What is CVE-2018-3833?
The vulnerability in Insteon Hub firmware version 1013 allows attackers to impersonate a remote server and install older firmware versions by exploiting the device's lack of firmware version verification.
The Impact of CVE-2018-3833
The vulnerability has a CVSS base score of 8.6, indicating a high severity level. It can lead to a compromise of the device's integrity without requiring any user interaction.
Technical Details of CVE-2018-3833
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The issue arises from the device's failure to verify the firmware version during the upgrade process, allowing the installation of older firmware images.
Affected Systems and Versions
- Product: Insteon
- Vendor: Insteon
- Affected Version: Insteon Hub 2245-222 - Firmware version 1013
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Network
- Privileges Required: None
- Scope: Changed
- Integrity Impact: High
- The attacker needs to impersonate the remote server 'cache.insteon.com' to provide a signed firmware image.
Mitigation and Prevention
Protecting systems from CVE-2018-3833 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Disable firmware upgrades initiated through PubNub until a secure upgrade mechanism is implemented.
- Monitor network traffic for any suspicious activity related to firmware upgrades.
Long-Term Security Practices
- Implement secure communication protocols for firmware updates to prevent unauthorized installations.
- Regularly update firmware with the latest versions to mitigate known vulnerabilities.
Patching and Updates
- Apply patches or updates provided by Insteon to address the vulnerability and enhance the security of Insteon Hub.