CVE-2017-6957 : Vulnerability Insights and Analysis
Learn about CVE-2017-6957, a vulnerability in Broadcom Wi-Fi HardMAC SoC chips firmware enabling remote code execution. Find mitigation steps and prevention measures here.
A vulnerability involving the firmware in Broadcom Wi-Fi HardMAC SoC chips has been discovered, allowing remote attackers to execute arbitrary code.
Understanding CVE-2017-6957
What is CVE-2017-6957?
The vulnerability in Broadcom Wi-Fi HardMAC SoC chips arises when the firmware supports CCKM Fast and Secure Roaming, enabling remote code execution by sending a specially crafted reassociation response frame.
The Impact of CVE-2017-6957
This vulnerability can be exploited by remote attackers to execute arbitrary code by sending a specially crafted reassociation response frame containing a Cisco IE (156).
Technical Details of CVE-2017-6957
Vulnerability Description
A stack-based buffer overflow in the firmware of Broadcom Wi-Fi HardMAC SoC chips allows remote attackers to execute arbitrary code via a crafted reassociation response frame with a Cisco IE (156).
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
The vulnerability occurs when the firmware supports CCKM Fast and Secure Roaming and the feature is enabled in RAM, allowing attackers to execute arbitrary code remotely.
Mitigation and Prevention
Immediate Steps to Take
- Disable CCKM Fast and Secure Roaming if not essential
- Implement network segmentation to limit the impact of potential attacks
- Regularly monitor network traffic for any suspicious activities
Long-Term Security Practices
- Keep firmware and software up to date to patch known vulnerabilities
- Conduct regular security audits and penetration testing to identify and address weaknesses
Patching and Updates
- Apply patches and updates provided by Broadcom to address the vulnerability