CVE-2021-34587 : Vulnerability Insights and Analysis
Discover the impact of CVE-2021-34587 on Bender/ebee Charge Controllers. Learn about the buffer overflow vulnerability, affected systems, mitigation steps, and prevention measures.
This CVE-2021-34587 relates to Bender/ebee Charge Controllers in multiple versions, where a long URL input could potentially cause a webserver crash due to a stack-based buffer overflow vulnerability.
Understanding CVE-2021-34587
In this section, we will delve into the specifics of CVE-2021-34587 and understand its impact, technical details, as well as mitigation strategies.
What is CVE-2021-34587?
The vulnerability in Bender/ebee Charge Controllers allows attackers to exploit a stack-based buffer overflow by providing a long URL, leading to a webserver crash.
The Impact of CVE-2021-34587
The impact of CVE-2021-34587 is rated as MEDIUM severity with a CVSS base score of 5.3. Attackers can trigger a denial of service (DoS) condition by exploiting this vulnerability, potentially disrupting the affected systems.
Technical Details of CVE-2021-34587
Let's explore the technical aspects of CVE-2021-34587, including vulnerability description, affected systems and versions, as well as the exploitation mechanism.
Vulnerability Description
The vulnerability arises when a lengthy URL is passed as an input to an sprintf function, resulting in a buffer overflow condition in the stack variable.
Affected Systems and Versions
Bender/ebee Charge Controllers versions 5.11.x, 5.12.x, 5.13.x, and 5.20.x are impacted by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by crafting a specially designed URL to trigger the buffer overflow, potentially causing a webserver crash.
Mitigation and Prevention
In this section, we will discuss the steps to mitigate the risks associated with CVE-2021-34587 and safeguard the affected systems.
Immediate Steps to Take
Administrators are advised to apply patches provided by the vendor promptly to address the vulnerability and prevent potential exploitation.
Long-Term Security Practices
It is recommended to follow secure coding practices, input validation techniques, and regular vulnerability assessments to enhance the overall security posture.
Patching and Updates
Stay informed about security updates released by Bender/ebee and ensure timely application of patches to mitigate the CVE-2021-34587 vulnerability.