CVE-2021-26777 : Vulnerability Insights and Analysis
Learn about CVE-2021-26777, a critical buffer overflow vulnerability in CIRCUTOR COMPACT DC-S BASIC smart metering concentrator firmware version CIR_CDC_v1.2.17 that allows attackers to execute arbitrary code. Find out the impact, technical details, affected systems, and mitigation steps.
A buffer overflow vulnerability in function SetFirewall in index.cgi in CIRCUTOR COMPACT DC-S BASIC smart metering concentrator Firmware version CIR_CDC_v1.2.17 allows attackers to execute arbitrary code.
Understanding CVE-2021-26777
This section delves into the impact and technical details of the CVE-2021-26777 vulnerability.
What is CVE-2021-26777?
CVE-2021-26777 is a buffer overflow vulnerability in the SetFirewall function of index.cgi in the CIRCUTOR COMPACT DC-S BASIC smart metering concentrator firmware version CIR_CDC_v1.2.17. This vulnerability enables malicious attackers to execute arbitrary code on vulnerable systems.
The Impact of CVE-2021-26777
The impact of CVE-2021-26777 is severe as it allows threat actors to run unauthorized code on affected devices, potentially leading to further exploitation and compromise of sensitive information.
Technical Details of CVE-2021-26777
Let's explore the specifics of the vulnerability further.
Vulnerability Description
The vulnerability exists in the SetFirewall function in index.cgi, where an attacker can trigger a buffer overflow by providing crafted input, leading to the execution of arbitrary commands.
Affected Systems and Versions
The affected systems are those running CIRCUTOR COMPACT DC-S BASIC smart metering concentrator firmware version CIR_CDC_v1.2.17.
Exploitation Mechanism
By exploiting this vulnerability, threat actors can inject and execute malicious code on vulnerable devices, compromising their integrity and confidentiality.
Mitigation and Prevention
Discover the necessary steps to mitigate the risks associated with CVE-2021-26777.
Immediate Steps to Take
Immediately update the affected firmware to the latest version or apply patches provided by the vendor. Consider network segmentation and access controls to limit exposure to potential attacks.
Long-Term Security Practices
Implement regular security assessments, monitor for unusual activities, and educate users about the importance of cybersecurity hygiene to prevent similar security incidents.
Patching and Updates
Stay informed about security updates released by CIRCUTOR COMPACT and promptly apply them to ensure protection against known vulnerabilities.