CVE-2023-51771 Explained : Impact and Mitigation
Learn about CVE-2023-51771, a vulnerability in MicroHttpServer that allows a recv buffer overflow via a long URI. Understand its impact, technical details, and mitigation steps.
A detailed overview of CVE-2023-51771 highlighting its impact, technical details, and mitigation strategies.
Understanding CVE-2023-51771
In MicroHttpServer (aka Micro HTTP Server) through a8ab029, _ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI.
What is CVE-2023-51771?
CVE-2023-51771 is a vulnerability found in MicroHttpServer, specifically in _ParseHeader in lib/server.c. This vulnerability can be exploited through a one-byte recv buffer overflow caused by a lengthy URI.
The Impact of CVE-2023-51771
The impact of CVE-2023-51771 can lead to a potential security breach due to the buffer overflow in MicroHttpServer. Attackers may exploit this vulnerability to execute arbitrary code or cause a denial of service.
Technical Details of CVE-2023-51771
This section dives into the technical aspects of CVE-2023-51771 including the vulnerability description, affected systems and versions, and exploitation mechanism.
Vulnerability Description
_ParseHeader in lib/server.c allows a one-byte recv buffer overflow via a long URI in MicroHttpServer through a8ab029.
Affected Systems and Versions
The vulnerability affects MicroHttpServer through a8ab029. Specific details about impacted systems and versions are not available.
Exploitation Mechanism
The vulnerability can be exploited by sending a specially crafted URI that triggers a one-byte recv buffer overflow, potentially leading to unauthorized code execution or service disruption.
Mitigation and Prevention
In this section, we discuss the immediate steps to take, long-term security practices, and the importance of patching and updates.
Immediate Steps to Take
- Users of MicroHttpServer should update to a patched version to mitigate the risk of exploitation.
- Implement network-level defenses to detect and block malicious traffic targeting this vulnerability.
Long-Term Security Practices
- Regularly monitor for security advisories related to MicroHttpServer and other software components.
- Conduct vulnerability assessments and penetration testing to identify and address weaknesses proactively.
Patching and Updates
Stay informed about security updates released by MicroHttpServer developers and promptly apply patches to secure your systems against CVE-2023-51771.