CVE-2021-26675 : What You Need to Know
Learn about CVE-2021-26675, a critical stack-based buffer overflow vulnerability in dnsproxy in ConnMan before 1.39 allowing attackers to execute code. Find out the impact, affected systems, exploitation details, and mitigation steps.
A stack-based buffer overflow in dnsproxy in ConnMan before 1.39 could be used by network adjacent attackers to execute code.
Understanding CVE-2021-26675
This CVE describes a stack-based buffer overflow vulnerability in dnsproxy in ConnMan that could allow attackers to execute code.
What is CVE-2021-26675?
CVE-2021-26675 is a vulnerability in ConnMan's dnsproxy component that could be exploited by network adjacent attackers to trigger a stack-based buffer overflow, potentially resulting in the execution of arbitrary code.
The Impact of CVE-2021-26675
The impact of this vulnerability is severe as it allows attackers to potentially execute malicious code on the target system, compromising its security and integrity.
Technical Details of CVE-2021-26675
This section covers specific technical details related to CVE-2021-26675.
Vulnerability Description
The vulnerability in dnsproxy in ConnMan before version 1.39 allows attackers to exploit a stack-based buffer overflow, leading to potential code execution.
Affected Systems and Versions
The affected system includes ConnMan versions prior to 1.39 utilizing dnsproxy that are vulnerable to this stack-based buffer overflow.
Exploitation Mechanism
Attackers can exploit this vulnerability by sending crafted network packets to the target system, triggering the buffer overflow and potentially executing malicious code.
Mitigation and Prevention
To mitigate the risks associated with CVE-2021-26675, it is crucial to take immediate steps and implement long-term security practices.
Immediate Steps to Take
Immediately update ConnMan to version 1.39 or newer to address the vulnerability and prevent potential exploitation.
Long-Term Security Practices
Implement network segmentation, access controls, and regular security audits to bolster the overall security posture of the system.
Patching and Updates
Regularly monitor for security updates from ConnMan and apply patches promptly to ensure the system is protected against known vulnerabilities.