CVE-2021-36573 : Security Advisory and Response

A file upload vulnerability in Feehi CMS through version 2.1.1 allows attackers to execute arbitrary code by uploading a maliciously crafted image.

Understanding CVE-2021-36573

This section will delve into the details of CVE-2021-36573, shedding light on its impact and technical specifics.

What is CVE-2021-36573?

CVE-2021-36573 refers to a file upload vulnerability present in Feehi CMS up to version 2.1.1. The flaw enables malicious actors to execute arbitrary code through the upload of manipulated images.

The Impact of CVE-2021-36573

The vulnerability poses a severe security threat as threat actors can leverage it to execute unauthorized code on affected systems, potentially leading to a compromise of sensitive information and system integrity.

Technical Details of CVE-2021-36573

In this section, we will explore the technical aspects of CVE-2021-36573, including the vulnerability description, affected systems and versions, and exploitation mechanism.

Vulnerability Description

The vulnerability in Feehi CMS allows attackers to upload a specially crafted image, which, when processed by the application, can trigger the execution of arbitrary code on the underlying system.

Affected Systems and Versions

All versions of Feehi CMS up to 2.1.1 are impacted by CVE-2021-36573, exposing them to the risk of remote code execution through malicious image uploads.

Exploitation Mechanism

To exploit this vulnerability, threat actors upload a manipulated image containing malicious instructions. Upon processing this image, the CMS fails to properly sanitize user input, leading to the execution of unauthorized code.

Mitigation and Prevention

This section outlines the steps organizations and users can take to mitigate the risks associated with CVE-2021-36573 and prevent potential exploitation.

Immediate Steps to Take

Update Feehi CMS to the latest patched version that addresses the file upload vulnerability.
Implement strict input validation measures to prevent the execution of arbitrary code through image uploads.

Long-Term Security Practices

Conduct regular security assessments and code reviews to identify and remediate vulnerabilities in the CMS.
Train developers and system administrators on secure coding practices and threat modeling to prevent similar vulnerabilities in the future.

Patching and Updates

Stay informed about security updates and patches released by Feehi CMS developers. Promptly apply patches to ensure that known vulnerabilities, such as the file upload issue, are adequately addressed.