CVE-2021-45637 : Vulnerability Insights and Analysis
Learn about CVE-2021-45637, a critical vulnerability in NETGEAR routers allowing unauthenticated attackers to execute arbitrary code. Find out how to mitigate and prevent exploitation.
Certain NETGEAR devices are affected by a stack-based buffer overflow vulnerability, allowing an unauthenticated attacker to exploit the issue. This vulnerability affects multiple router models before specific firmware versions.
Understanding CVE-2021-45637
This CVE involves a critical vulnerability in NETGEAR routers that could lead to a high impact on confidentiality and integrity.
What is CVE-2021-45637?
The CVE-2021-45637 is a stack-based buffer overflow vulnerability in certain NETGEAR devices, enabling unauthenticated attackers to compromise affected routers.
The Impact of CVE-2021-45637
This vulnerability poses a high risk as attackers can exploit it to execute arbitrary code, potentially leading to unauthorized access, data theft, and system compromise.
Technical Details of CVE-2021-45637
CVE-2021-45637 has the following technical details:
Vulnerability Description
The vulnerability is a stack-based buffer overflow in NETGEAR routers, impacting models such as R6260, R6800, R6700v2, R6900v2, R7450, AC2100, AC2400, and AC2600.
Affected Systems and Versions
- R6260 before 1.1.0.76
- R6800 before 1.2.0.62
- R6700v2 before 1.2.0.62
- R6900v2 before 1.2.0.62
- R7450 before 1.2.0.62
- AC2100 before 1.2.0.62
- AC2400 before 1.2.0.62
- AC2600 before 1.2.0.62
Exploitation Mechanism
The vulnerability allows unauthenticated attackers to exploit a stack-based buffer overflow in the affected routers, potentially leading to the execution of arbitrary code.
Mitigation and Prevention
To address CVE-2021-45637, follow these mitigation steps:
Immediate Steps to Take
- Update the firmware of the affected devices to versions that patch the vulnerability.
- Monitor network traffic for any suspicious activity or exploitation attempts.
- Implement strong network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly update firmware and security patches on all network devices.
- Conduct security assessments and penetration testing to identify and address vulnerabilities.
- Educate users on best practices for network security and password hygiene.
Patching and Updates
Ensure that all NETGEAR devices are running the latest firmware versions that address the CVE-2021-45637 vulnerability.