CVE-2021-40887 : Vulnerability Insights and Analysis

Projectsend version r1295 is affected by a directory traversal vulnerability due to insufficient input sanitization, allowing attackers to manipulate files on the system. Find out more about the impact, technical details, and mitigation steps for this CVE.

Understanding CVE-2021-40887

Projectsend version r1295 is vulnerable to a directory traversal exploit that can lead to unauthorized access and manipulation of files on the system.

What is CVE-2021-40887?

Projectsend version r1295 contains a security flaw that enables attackers to perform directory traversal by manipulating the files[] parameter, potentially compromising sensitive information stored on the system.

The Impact of CVE-2021-40887

The vulnerability allows an attacker to navigate outside the intended directory structure and access files they are not authorized to view, potentially leading to data breaches and unauthorized file modifications.

Technical Details of CVE-2021-40887

Projectsend version r1295's directory traversal vulnerability has the following technical aspects:

Vulnerability Description

Lack of input sanitization for the files[] parameter in Projectsend version r1295 permits attackers to include ../ sequences, granting unauthorized access to PHP and system files.

Affected Systems and Versions

Affected Version: r1295
Vendor: Projectsend
Product: Not applicable

Exploitation Mechanism

Attackers can exploit the vulnerability by manipulating the files[] parameter to add ../ sequences, enabling traversal to sensitive system files.

Mitigation and Prevention

To secure systems against CVE-2021-40887, consider the following mitigation steps:

Immediate Steps to Take

Update Projectsend to the latest patched version
Apply input sanitization to prevent directory traversal
Review and restrict access permissions to sensitive directories

Long-Term Security Practices

Conduct regular security audits and vulnerability scans
Implement least privilege access controls
Train staff on secure coding practices and file handling

Patching and Updates

Projectsend should release a patch addressing the directory traversal vulnerability
Stay informed about security updates and apply patches promptly