CVE-2019-20716 Explained : Impact and Mitigation
Learn about CVE-2019-20716, a critical stack-based buffer overflow vulnerability in certain NETGEAR devices, impacting DGN2200v4 and DGND2200Bv4 versions. Find mitigation steps and prevention measures.
An unauthenticated attacker can exploit a stack-based buffer overflow vulnerability in certain NETGEAR devices, affecting DGN2200v4 versions before 1.0.0.110 and DGND2200Bv4 versions before 1.0.0.109.
Understanding CVE-2019-20716
This CVE involves a critical vulnerability in specific NETGEAR devices that could allow attackers to execute arbitrary code.
What is CVE-2019-20716?
CVE-2019-20716 is a stack-based buffer overflow vulnerability found in certain models of NETGEAR devices, enabling unauthenticated attackers to compromise affected systems.
The Impact of CVE-2019-20716
The vulnerability has a CVSS base score of 6.8 (Medium severity) with high impacts on confidentiality, integrity, and availability of the affected systems.
Technical Details of CVE-2019-20716
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability allows unauthenticated attackers to trigger a stack-based buffer overflow in specific NETGEAR device models.
Affected Systems and Versions
- DGN2200v4 versions prior to 1.0.0.110
- DGND2200Bv4 versions prior to 1.0.0.109
Exploitation Mechanism
- Attack Complexity: Low
- Attack Vector: Adjacent Network
- Privileges Required: High
- User Interaction: None
- Scope: Unchanged
Mitigation and Prevention
Protecting systems from CVE-2019-20716 requires immediate actions and long-term security practices.
Immediate Steps to Take
- Apply security patches provided by NETGEAR promptly.
- Implement network segmentation to limit the attack surface.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities.
- Conduct security assessments and penetration testing to identify weaknesses.
- Educate users on safe browsing habits and cybersecurity best practices.
- Implement strong access controls and authentication mechanisms.
Patching and Updates
Ensure that all affected NETGEAR devices are updated with the latest firmware releases to mitigate the CVE-2019-20716 vulnerability.