CVE-2019-20767 : Vulnerability Insights and Analysis
Learn about CVE-2019-20767, a stack-based buffer overflow vulnerability in certain NETGEAR devices, impacting models like D6100, D3600, and R9000. Find mitigation steps and prevention measures here.
A stack-based buffer overflow vulnerability has been found in certain NETGEAR devices, allowing exploitation by an authenticated user. The affected models include D6100, D3600, D6000, R9000, R8900, R7800, WNDR4500v3, WNDR4300v2, WNDR4300, WNDR3700v4, and WNR2000v5.
Understanding CVE-2019-20767
This CVE identifies a stack-based buffer overflow vulnerability in specific NETGEAR devices that can be exploited by authenticated users.
What is CVE-2019-20767?
A stack-based buffer overflow vulnerability in certain NETGEAR devices allows authenticated users to execute arbitrary code or crash the device.
The Impact of CVE-2019-20767
- CVSS Base Score: 6.8 (Medium)
- Attack Vector: Adjacent Network
- Attack Complexity: Low
- Privileges Required: High
- User Interaction: None
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
Technical Details of CVE-2019-20767
This section provides detailed technical information about the vulnerability.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in certain NETGEAR devices, allowing authenticated users to exploit it.
Affected Systems and Versions
The following NETGEAR models are affected:
- D6100 (version prior to 1.0.0.60)
- D3600 (version prior to 1.0.0.75)
- D6000 (version prior to 1.0.0.75)
- R9000 (version prior to 1.0.4.26)
- R8900 (version prior to 1.0.4.26)
- R7800 (version prior to 1.0.2.52)
- WNDR4500v3 (version prior to 1.0.0.58)
- WNDR4300v2 (version prior to 1.0.0.58)
- WNDR4300 (version prior to 1.0.2.104)
- WNDR3700v4 (version prior to 1.0.2.102)
- WNR2000v5 (version prior to 1.0.0.66)
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user to trigger a stack-based buffer overflow, potentially leading to arbitrary code execution or device crashes.
Mitigation and Prevention
Protect your systems from CVE-2019-20767 with the following steps:
Immediate Steps to Take
- Update affected devices to the latest firmware versions.
- Implement strong authentication mechanisms to prevent unauthorized access.
Long-Term Security Practices
- Regularly monitor for security advisories and updates from NETGEAR.
- Conduct security assessments and penetration testing to identify vulnerabilities.
Patching and Updates
- Apply patches and updates provided by NETGEAR promptly to address the vulnerability.