CVE-2021-37625 : What You Need to Know
Learn about CVE-2021-37625, a high severity vulnerability in Skytable versions prior to 0.6.4, enabling DoS attacks. Understand the impact, technical details, and mitigation steps.
A detailed overview of CVE-2021-37625, an Incorrect Check of Function Return Value vulnerability in Skytable.
Understanding CVE-2021-37625
This section provides insights into the vulnerability, its impact, technical details, and mitigation strategies.
What is CVE-2021-37625?
The CVE-2021-37625 vulnerability affects Skytable, an open-source NoSQL database. In versions prior to 0.6.4, an incorrect check of the return value of the accept function in the run-loop for various types of sockets can lead to a server shutdown, enabling DoS attacks.
The Impact of CVE-2021-37625
The vulnerability has a CVSS base score of 7.5, indicating a high severity issue. It allows attackers to crash the whole database server by exploiting an incomplete TLS connection or using specially crafted TCP packets.
Technical Details of CVE-2021-37625
This section delves into the specifics of the vulnerability, including the description, affected systems, versions, and the exploitation mechanism.
Vulnerability Description
In versions before 0.6.4, Skytable's incorrect check of return values in the run-loop can cause the server to shut down, facilitating DoS attacks with minimal bandwidth usage.
Affected Systems and Versions
Skytable versions earlier than 0.6.4 are impacted by this vulnerability due to the flawed accept function check in the run-loop.
Exploitation Mechanism
Attackers can exploit this vulnerability by leveraging incomplete TLS connections or sending crafted TCP packets to trigger the application layer backoff algorithm.
Mitigation and Prevention
Explore the steps to mitigate and prevent exploitation of CVE-2021-37625 for enhanced security.
Immediate Steps to Take
Users should update Skytable to version 0.6.4 or above to address the incorrect return value check issue and prevent potential DoS attacks.
Long-Term Security Practices
Implement robust security measures, regularly update software, and conduct security audits to enhance the overall security posture.
Patching and Updates
Stay informed about security patches released by Skytable, and promptly apply updates to shield the system from known vulnerabilities.