CVE-2019-20751 Explained : Impact and Mitigation
Learn about CVE-2019-20751, a stack-based buffer overflow vulnerability in certain NETGEAR devices, impacting confidentiality, integrity, and availability. Find mitigation steps and affected models here.
A stack-based buffer overflow vulnerability affects certain models of NETGEAR devices when accessed by an authenticated user.
Understanding CVE-2019-20751
What is CVE-2019-20751?
This vulnerability involves a stack-based buffer overflow in specific NETGEAR device models when interacted with by an authenticated user.
The Impact of CVE-2019-20751
The vulnerability can have a medium severity impact, with high confidentiality, integrity, and availability impacts. It requires high privileges but no user interaction.
Technical Details of CVE-2019-20751
Vulnerability Description
The vulnerability is a stack-based buffer overflow in NETGEAR devices, affecting models such as D6100, DM200, EX2700, and others before specific firmware versions.
Affected Systems and Versions
- D6100 (before 1.0.0.60)
- DM200 (before 1.0.0.61)
- EX2700 (before 1.0.1.48)
- EX6100v2 (before 1.0.1.76)
- Multiple other models before specific firmware versions
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user to trigger a stack-based buffer overflow, potentially leading to unauthorized access or denial of service.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to the latest firmware versions.
- Restrict network access to vulnerable devices.
- Monitor network traffic for signs of exploitation.
Long-Term Security Practices
- Regularly update firmware and security patches.
- Implement network segmentation to contain potential attacks.
Patching and Updates
Apply patches and updates provided by NETGEAR to address the vulnerability.