CVE-2021-29641 Explained : Impact and Mitigation
Learn about CVE-2021-29641, a vulnerability in Directus 8 before 8.8.2 allowing remote authenticated users to execute arbitrary code. Find out about the impact, technical details, and mitigation steps.
Directus 8 before 8.8.2 is affected by a vulnerability that allows remote authenticated users to execute arbitrary code. This flaw arises from improper file-upload permissions, enabling the upload of malicious .php files. Successful exploitation is possible in specific system configurations using the Apache HTTP Server and the local-storage driver.
Understanding CVE-2021-29641
This section delves into the details of the CVE-2021-29641 vulnerability.
What is CVE-2021-29641?
CVE-2021-29641 is a security vulnerability in Directus 8 before version 8.8.2 that permits authenticated remote users to run arbitrary code by manipulating file-upload permissions.
The Impact of CVE-2021-29641
The exploitation of this vulnerability can result in the execution of malicious code by authenticated users, posing a significant security risk to affected systems.
Technical Details of CVE-2021-29641
Explore the technical aspects associated with CVE-2021-29641.
Vulnerability Description
Directus 8 before 8.8.2 allows the upload of .php files to critical directories, leading to the execution of unauthorized code by authenticated attackers.
Affected Systems and Versions
All installations running Directus 8 versions prior to 8.8.2 with the Apache HTTP Server and the local-storage driver are susceptible to this vulnerability.
Exploitation Mechanism
Successful exploitation involves uploading a malicious .php file to the main upload directory or both a .php file and a .htaccess file to a subdirectory.
Mitigation and Prevention
Discover the steps to mitigate and prevent the CVE-2021-29641 vulnerability.
Immediate Steps to Take
Immediately update Directus to version 8.8.2 or later to patch the vulnerability and prevent unauthorized code execution.
Long-Term Security Practices
Enforce secure coding practices, restrict file upload permissions, and regularly monitor system logs for any suspicious activities.
Patching and Updates
Regularly apply security patches and updates to Directus and associated components to address known vulnerabilities and enhance overall system security.