CVE-2021-25856 Explained : Impact and Mitigation

An issue was discovered in pcmt superMicro-CMS version 3.11, allowing attackers to delete files via a crafted image file in images.php.

Understanding CVE-2021-25856

This section will provide insights into the impact, technical details, and mitigation strategies related to CVE-2021-25856.

What is CVE-2021-25856?

CVE-2021-25856 refers to a vulnerability found in pcmt superMicro-CMS version 3.11, enabling malicious actors to delete files by exploiting a specially designed image file within images.php.

The Impact of CVE-2021-25856

The vulnerability poses a significant security risk as it allows unauthorized deletion of files, potentially leading to data loss or system disruption.

Technical Details of CVE-2021-25856

Delve deeper into the specifics of the vulnerability, including the description, affected systems, and exploitation mechanism.

Vulnerability Description

The flaw in pcmt superMicro-CMS version 3.11 permits file deletion through the manipulation of image files processed by images.php.

Affected Systems and Versions

All instances running pcmt superMicro-CMS version 3.11 are affected by CVE-2021-25856 and are vulnerable to file deletion attacks.

Exploitation Mechanism

By uploading a specially crafted image file via images.php, threat actors can exploit this vulnerability to delete critical system files.

Mitigation and Prevention

Learn how to protect your systems against CVE-2021-25856 through immediate and long-term security measures.

Immediate Steps to Take

Implement temporary measures to secure your system, such as restricting file upload capabilities and monitoring file deletion activities.

Long-Term Security Practices

Establish robust security practices, including regular security audits, user input validation, and secure coding techniques to prevent similar vulnerabilities.

Patching and Updates

Ensure timely installation of patches and updates provided by pcmt for superMicro-CMS to address and mitigate the vulnerability effectively.