CVE-2021-44769 : Exploit Details and Defense Strategies
Learn about CVE-2021-44769, an improper input validation flaw in Lanner Inc IAC-AST2500A firmware leading to DoS attacks. Find mitigation steps and preventive measures here.
TLS Certificate Generation Function Improper Input Validation vulnerability in Lanner Inc IAC-AST2500A standard firmware.
Understanding CVE-2021-44769
What is CVE-2021-44769?
An improper input validation vulnerability in the TLS certificate generation function of Lanner Inc IAC-AST2500A firmware allows attackers to trigger a Denial-of-Service (DoS) condition, requiring a factory reset for recovery.
The Impact of CVE-2021-44769
The vulnerability can lead to a DoS attack, disrupting the availability of the affected system. It affects devices running firmware version 1.10.0.
Technical Details of CVE-2021-44769
Vulnerability Description
The issue stems from improper input validation in the TLS certificate generation function, enabling DoS attacks.
Affected Systems and Versions
- Vendor: Lanner Inc
- Product: IAC-AST2500A
- Vulnerable Version: 1.10.0
Exploitation Mechanism
Attackers can exploit the vulnerability by sending crafted requests to the TLS certificate generation function, leading to system unavailability.
Mitigation and Prevention
Immediate Steps to Take
- Apply vendor-supplied patches promptly.
- Implement network segmentation to restrict access.
- Monitor network traffic for suspicious activities.
Long-Term Security Practices
- Conduct regular security assessments and audits.
- Keep firmware and software up to date.
- Educate users on safe computing practices.
Patching and Updates
Ensure timely application of security patches and firmware updates provided by Lanner Inc.