CVE-2018-21199 : Exploit Details and Defense Strategies
Learn about CVE-2018-21199, a stack-based buffer overflow vulnerability in certain NETGEAR devices, impacting models like D7800, R6100, R7500, and more. Find out the impact, affected systems, and mitigation steps.
An authenticated user can exploit a stack-based buffer overflow vulnerability in certain NETGEAR devices affecting models like D7800, R6100, R7500, R7500v2, R7800, R9000, and WNDR4300.
Understanding CVE-2018-21199
This CVE involves a stack-based buffer overflow vulnerability in specific NETGEAR devices, potentially allowing an authenticated user to execute malicious code.
What is CVE-2018-21199?
The vulnerability allows an authenticated user to trigger a stack-based buffer overflow on affected NETGEAR devices, leading to potential exploitation.
The Impact of CVE-2018-21199
- CVSS Base Score: 6.8 (Medium Severity)
- Attack Vector: Adjacent Network
- Confidentiality Impact: High
- Integrity Impact: High
- Availability Impact: High
- Privileges Required: High
- Scope: Unchanged
- User Interaction: None
Technical Details of CVE-2018-21199
This section provides more in-depth technical insights into the vulnerability.
Vulnerability Description
The vulnerability is a stack-based buffer overflow in certain NETGEAR devices, allowing an authenticated user to potentially execute arbitrary code.
Affected Systems and Versions
The following NETGEAR models are impacted:
- D7800 (version before 1.0.1.30)
- R6100 (version before 1.0.1.22)
- R7500 (version before 1.0.0.122)
- R7500v2 (version before 1.0.3.24)
- R7800 (version before 1.0.2.40)
- R9000 (version before 1.0.2.52)
- WNDR4300 (version before 1.0.2.98)
Exploitation Mechanism
The vulnerability can be exploited by an authenticated user to overflow the stack, potentially leading to the execution of malicious code.
Mitigation and Prevention
It is crucial to take immediate steps to mitigate the risks posed by CVE-2018-21199.
Immediate Steps to Take
- Apply security patches provided by NETGEAR for the affected devices.
- Monitor network traffic for any suspicious activities.
- Restrict access to vulnerable devices to authorized personnel only.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities.
- Conduct security assessments and penetration testing to identify and address potential weaknesses.
Patching and Updates
- Keep NETGEAR devices up to date with the latest firmware releases to ensure protection against known vulnerabilities.