CVE-2017-16276 Explained : Impact and Mitigation
Learn about CVE-2017-16276 involving buffer overflow vulnerabilities in Insteon Hub firmware version 1012. Find out how attackers exploit this issue and steps to mitigate the risk.
CVE-2017-16276 involves buffer overflow vulnerabilities in the PubNub message handler for the 'cc' channel of Insteon Hub firmware version 1012. Attackers can exploit this by sending crafted commands through the PubNub service, leading to a stack-based buffer overflow.
Understanding CVE-2017-16276
What is CVE-2017-16276?
Multiple buffer overflow vulnerabilities exist in the PubNub message handler for the 'cc' channel of Insteon Hub firmware version 1012.
The Impact of CVE-2017-16276
These vulnerabilities allow attackers to trigger a stack-based buffer overflow, potentially overwriting arbitrary data.
Technical Details of CVE-2017-16276
Vulnerability Description
- Attacker can exploit the vulnerability by sending crafted commands through the PubNub service
- Stack-based buffer overflow occurs in the 'cc' channel of Insteon Hub firmware version 1012
Affected Systems and Versions
- Vendor: Insteon
- Product: Hub
- Affected Version: Not specified
Exploitation Mechanism
- Attacker sends authenticated HTTP request with crafted commands
- Buffer overflow occurs at memory address 0x9d0175f4
- 'gbt' key value copied to a buffer at $sp+0x280 using strcpy function
- Buffer size is 16 bytes, overflow happens with input longer than that
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor patches and updates promptly
- Monitor network traffic for any suspicious activities
Long-Term Security Practices
- Regularly update firmware and software to latest versions
- Implement network segmentation and access controls
Patching and Updates
- Check vendor's security advisories for patches and updates