CVE-2021-45757 : Vulnerability Insights and Analysis
Learn about CVE-2021-45757 affecting ASUS AC68U <=3.0.0.4.385.20852 due to a buffer overflow in blocking.cgi, leading to denial of service (DoS). Understand the impact and find mitigation steps.
ASUS AC68U <=3.0.0.4.385.20852 is affected by a buffer overflow in blocking.cgi, leading to a denial of service (DoS).
Understanding CVE-2021-45757
This CVE involves a buffer overflow vulnerability in ASUS AC68U, potentially resulting in a DoS attack.
What is CVE-2021-45757?
The vulnerability in blocking.cgi in ASUS AC68U <=3.0.0.4.385.20852 allows attackers to cause a denial of service by triggering a buffer overflow.
The Impact of CVE-2021-45757
The exploitation of this vulnerability can lead to a denial of service condition on the affected device, disrupting its normal operation.
Technical Details of CVE-2021-45757
This section provides more technical insights into the CVE.
Vulnerability Description
A buffer overflow in blocking.cgi within ASUS AC68U <=3.0.0.4.385.20852 permits attackers to execute a DoS attack by overwhelming the system's buffer capacities.
Affected Systems and Versions
- Product: ASUS AC68U
- Version: <=3.0.0.4.385.20852
Exploitation Mechanism
Attackers can exploit the buffer overflow in the blocking.cgi component to send crafted requests, causing the service to crash and denying legitimate users access.
Mitigation and Prevention
It is essential to take immediate steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Update the device's firmware to the latest version provided by ASUS.
- Implement strong network access controls to restrict unauthorized access.
- Monitor network traffic for any unusual patterns that may indicate an ongoing attack.
Long-Term Security Practices
- Regularly update firmware and software to patch known vulnerabilities.
- Conduct security assessments and penetration testing to proactively identify weaknesses.
- Educate users about safe browsing habits and cybersecurity best practices.
Patching and Updates
- Check ASUS's official support page for the latest firmware updates that address this vulnerability.
- Apply patches promptly to ensure the protection of the device against potential attacks.