CVE-2018-21144 : Exploit Details and Defense Strategies
Learn about CVE-2018-21144, a stack-based buffer overflow vulnerability in certain NETGEAR devices. Find out affected systems, impacts, and mitigation steps.
A stack-based buffer overflow vulnerability has been identified in certain NETGEAR devices, potentially exploited by authenticated users.
Understanding CVE-2018-21144
This CVE involves a critical vulnerability affecting specific NETGEAR devices when accessed by authenticated users.
What is CVE-2018-21144?
The CVE-2018-21144 vulnerability is a stack-based buffer overflow issue found in various NETGEAR devices, allowing authenticated users to potentially execute arbitrary code.
The Impact of CVE-2018-21144
The vulnerability poses a medium-severity risk with high impacts on confidentiality, integrity, and availability of affected devices.
Technical Details of CVE-2018-21144
This section provides detailed technical insights into the CVE-2018-21144 vulnerability.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in certain NETGEAR devices, including DM200, R7500, R7800, R8900, R9000, WNDR3700v4, WNDR4300, WNDR4300v2, WNDR4500v3, and WNR2000v5.
Affected Systems and Versions
- DM200: versions before 1.0.0.52
- R7500: versions before 1.0.0.122
- R7800: versions before 1.0.2.42
- R8900: versions before 1.0.3.10
- R9000: versions before 1.0.3.16
- WNDR3700v4: versions before 1.0.2.96
- WNDR4300: versions before 1.0.2.98
- WNDR4300v2: versions before 1.0.0.54
- WNDR4500v3: versions before 1.0.0.54
- WNR2000v5: versions before 1.0.0.64
Exploitation Mechanism
The vulnerability can be exploited by authenticated users to trigger a stack-based buffer overflow, potentially leading to arbitrary code execution.
Mitigation and Prevention
To address CVE-2018-21144, immediate actions and long-term security practices are crucial.
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected devices.
- Monitor vendor communications for updates and security advisories.
- Restrict network access to vulnerable devices.
Long-Term Security Practices
- Regularly update firmware and software on all network devices.
- Implement strong authentication mechanisms and access controls.
- Conduct regular security assessments and penetration testing.
Patching and Updates
Ensure timely installation of security patches and firmware updates released by NETGEAR to mitigate the CVE-2018-21144 vulnerability.