CVE-2019-20740 : What You Need to Know
Learn about CVE-2019-20740, a critical stack-based buffer overflow vulnerability in NETGEAR devices, allowing authenticated users to exploit it. Find out the impacted systems and versions, mitigation steps, and prevention measures.
A stack-based buffer overflow vulnerability has been identified in several NETGEAR devices, allowing authenticated users to exploit it. The affected devices include DGN2200v4, DGND2200Bv4, R7300, R8300, and R8500 with specific firmware versions.
Understanding CVE-2019-20740
This CVE involves a critical vulnerability in NETGEAR devices that could be exploited by authenticated users.
What is CVE-2019-20740?
CVE-2019-20740 is a stack-based buffer overflow vulnerability found in certain NETGEAR devices, enabling authenticated users to execute malicious activities.
The Impact of CVE-2019-20740
The vulnerability has a CVSS base score of 6.3, with high impacts on confidentiality, integrity, and availability. The attack complexity is high, requiring adjacent network access and high privileges.
Technical Details of CVE-2019-20740
This section provides more technical insights into the CVE.
Vulnerability Description
The vulnerability allows authenticated users to trigger a stack-based buffer overflow in affected NETGEAR devices.
Affected Systems and Versions
The following NETGEAR devices are affected:
- DGN2200v4 firmware versions prior to 1.0.0.110
- DGND2200Bv4 firmware versions prior to 1.0.0.109
- R7300 firmware versions prior to 1.0.0.70
- R8300 firmware versions prior to 1.0.2.130
- R8500 firmware versions prior to 1.0.2.130
Exploitation Mechanism
To exploit this vulnerability, an authenticated user needs high privileges and adjacent network access, making it critical for device security.
Mitigation and Prevention
Protecting against CVE-2019-20740 is crucial for device security.
Immediate Steps to Take
- Update the firmware of affected devices to versions that address the vulnerability.
- Monitor network traffic for any suspicious activities.
Long-Term Security Practices
- Regularly update firmware and security patches on all network devices.
- Implement strong authentication mechanisms and access controls.
Patching and Updates
Ensure that all affected NETGEAR devices are patched with the latest firmware updates to mitigate the vulnerability.