CVE-2017-6956 Explained : Impact and Mitigation
Learn about CVE-2017-6956, a critical stack buffer overflow vulnerability in Broadcom Wi-Fi HardMAC SoC with fbt firmware allowing remote code execution. Find mitigation steps and prevention measures.
A stack buffer overflow vulnerability in the Broadcom Wi-Fi HardMAC SoC with fbt firmware allows remote code execution via a crafted access point.
Understanding CVE-2017-6956
This CVE identifies a critical vulnerability in Broadcom Wi-Fi HardMAC SoC with fbt firmware that can be exploited remotely.
What is CVE-2017-6956?
A stack buffer overflow vulnerability in Broadcom Wi-Fi HardMAC SoC with fbt firmware allows attackers to execute remote code by sending a specially crafted Fast BSS Transition Information Element (FT-IE) during 802.11r (FT) authentication.
The Impact of CVE-2017-6956
- Attackers can exploit this vulnerability to execute remote code on affected devices.
- The attack can be initiated by a malicious access point sending a specific FT-IE with a lengthy R0KH-ID field.
Technical Details of CVE-2017-6956
This section provides detailed technical information about the vulnerability.
Vulnerability Description
A stack buffer overflow occurs during the processing of an authentication response for 802.11r (FT) in Broadcom Wi-Fi HardMAC SoC with fbt firmware, enabling remote code execution.
Affected Systems and Versions
- Product: Not applicable
- Vendor: Not applicable
- Versions: Not applicable
Exploitation Mechanism
- Attackers exploit the vulnerability by sending a Fast BSS Transition Information Element (FT-IE) with a lengthy R0KH-ID field.
Mitigation and Prevention
Protecting systems from CVE-2017-6956 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply patches or updates provided by Broadcom to address the vulnerability.
- Monitor vendor communications for security advisories and follow recommended actions.
Long-Term Security Practices
- Regularly update firmware and software to mitigate potential vulnerabilities.
- Implement network segmentation and access controls to limit the impact of successful attacks.
Patching and Updates
- Ensure all devices using Broadcom Wi-Fi HardMAC SoC with fbt firmware are updated with the latest patches to prevent exploitation of this vulnerability.