CVE-2021-41919 : Exploit Details and Defense Strategies

webTareas version 2.4 and earlier allow authenticated users to upload potentially dangerous files, leading to code injection and execution vulnerabilities.

Understanding CVE-2021-41919

webTareas version 2.4 and earlier allow authenticated users to upload potentially dangerous files without restrictions, enabling code injection and remote code execution.

What is CVE-2021-41919?

webTareas version 2.4 and earlier allow authenticated users to upload files inappropriately, leading to code injection and the ability to execute code remotely.

The Impact of CVE-2021-41919

The vulnerability enables attackers to upload malicious files, inject code or malware, and potentially execute code on remote user browsers.

Technical Details of CVE-2021-41919

webTareas version 2.4 and earlier has a security vulnerability that allows authenticated users to upload dangerous files, leading to code injection.

Vulnerability Description

Authenticated users can upload dangerous files without restrictions, allowing for code injection and potential remote code execution.

Affected Systems and Versions

Product: webTareas
Vendor: n/a
Version: 2.4 and earlier

Exploitation Mechanism

Attackers can manipulate the /includes/upload.php endpoint using HTTP POST data to upload malicious files, enabling code injection and potential code execution on remote user browsers.

Mitigation and Prevention

Immediate action and long-term security practices are essential to mitigate the risks of CVE-2021-41919.

Immediate Steps to Take

Update the webTareas application to the latest secure version.
Implement file upload restrictions and security checks.
Monitor and audit file uploads for suspicious activities.

Long-Term Security Practices

Conduct regular security assessments and audits.
Educate users on safe file uploading practices.
Implement a robust application security program.

Patching and Updates

Apply patches and updates released by the webTareas vendor to address the vulnerability.