CVE-2021-26753 : Security Advisory and Response

NeDi 1.9C allows an authenticated user to inject PHP code, posing a serious security risk. Learn about the impact, technical details, and mitigation steps.

Understanding CVE-2021-26753

This CVE identifies a vulnerability in NeDi 1.9C that enables an attacker to inject PHP code through the System Files function.

What is CVE-2021-26753?

The vulnerability in NeDi 1.9C allows an authenticated user to inject PHP code via the txt HTTP POST parameter in the /System-Files.php endpoint.

The Impact of CVE-2021-26753

Exploiting this vulnerability can give an attacker access to the operating system where NeDi is installed, compromising all application data.

Technical Details of CVE-2021-26753

Understanding the vulnerability details, affected systems, and exploitation mechanism is crucial.

Vulnerability Description

An authenticated user in NeDi 1.9C can inject PHP code through the System Files function, opening up the system to unauthorized access.

Affected Systems and Versions

All instances running NeDi 1.9C are affected by this vulnerability, potentially exposing a wide range of systems to exploitation.

Exploitation Mechanism

By utilizing the txt HTTP POST parameter in the /System-Files.php endpoint, attackers can inject malicious PHP code, breaching the system's security.

Mitigation and Prevention

Taking immediate steps and adopting long-term security practices is essential to mitigate the risks posed by CVE-2021-26753.

Immediate Steps to Take

Ensure that NeDi 1.9C installations are patched promptly, and closely monitor system activities for any signs of unauthorized access.

Long-Term Security Practices

Implement robust cybersecurity measures, such as regular security audits, network segmentation, and user access controls, to enhance overall system security.

Patching and Updates

Stay informed about security updates and patches released by NeDi to address this vulnerability efficiently.