CVE-2021-26528 : Security Advisory and Response

A vulnerability has been identified in Cesanta Mongoose HTTP server 7.0 that allows for a remote Out-of-Bounds (OOB) write attack by exploiting the mg_http_serve_file function.

Understanding CVE-2021-26528

This section will delve into the key details regarding CVE-2021-26528.

What is CVE-2021-26528?

The mg_http_serve_file function in Cesanta Mongoose HTTP server 7.0 is susceptible to a remote OOB write attack through a connection request following memory pool depletion.

The Impact of CVE-2021-26528

The vulnerability enables threat actors to execute malicious OOB write attacks, resulting in potential security breaches and unauthorized access.

Technical Details of CVE-2021-26528

Explore the technical aspects of CVE-2021-26528 in this section.

Vulnerability Description

The vulnerability in Cesanta Mongoose HTTP server 7.0 allows for remote OOB write attacks via connection requests after memory pool exhaustion.

Affected Systems and Versions

The affected system is Cesanta Mongoose HTTP server 7.0, with all versions being vulnerable to this specific attack.

Exploitation Mechanism

Threat actors can exploit this vulnerability by submitting connection requests once the memory pool has been depleted.

Mitigation and Prevention

Discover the necessary steps to mitigate and prevent the exploitation of CVE-2021-26528.

Immediate Steps to Take

Immediately address the vulnerability by applying relevant patches and updates to the Cesanta Mongoose HTTP server.

Long-Term Security Practices

Implement robust security protocols and regular monitoring to detect and prevent similar vulnerabilities in the future.

Patching and Updates

Stay vigilant for security advisories and promptly apply any patches or updates released by Cesanta to safeguard against CVE-2021-26528.